JPH0720113A - Iron content measuring device - Google Patents
Iron content measuring deviceInfo
- Publication number
- JPH0720113A JPH0720113A JP15018593A JP15018593A JPH0720113A JP H0720113 A JPH0720113 A JP H0720113A JP 15018593 A JP15018593 A JP 15018593A JP 15018593 A JP15018593 A JP 15018593A JP H0720113 A JPH0720113 A JP H0720113A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- reaction
- sample
- iron
- iron content
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
(57)【要約】
【目的】 サンプル中の粒子状の鉄をほぼ完全に溶解す
るとともに溶解した鉄を定量可能なＦＩＡで検出するこ
とにより粒子状の鉄を含むサンプルを迅速に定量するこ
とが可能な鉄分測定装置を提供する。
【構成】 鉄の粒子を含むサンプル液と，このサンプル
液を取り込んで搬送する搬送液と，この搬送液に第１反
応液を注入する第１反応液注入手段と，前記サンプル液
を含む搬送液と第１反応液の混合液を加圧する加圧手段
と，前記加圧された状態の混合液にマイクロ波を照射し
て加熱するマイクロ波加熱器と，この加熱された混合液
に複数の反応液を加えて順次反応させる反応手段と，こ
の複数回反応させた反応液に含まれる鉄分を検出する鉄
分検出手段を備えている。
(57) [Summary] [Purpose] It is possible to rapidly quantify a sample containing particulate iron by almost completely dissolving particulate iron in the sample and detecting the dissolved iron with a quantifiable FIA. A possible iron content measuring device is provided. [Structure] A sample liquid containing iron particles, a carrier liquid for taking in and transporting the sample liquid, a first reaction liquid injecting means for injecting a first reaction liquid into the carrier liquid, and a carrier liquid containing the sample liquid. Pressurizing means for pressurizing the mixed solution of the first and the first reaction solutions, a microwave heater for heating the mixed solution in the pressurized state by applying microwaves, and a plurality of reactions for the heated mixed solution. It is provided with a reaction means for adding the liquid and sequentially reacting it, and an iron content detecting means for detecting the iron content contained in the reaction liquid which has been reacted a plurality of times.
Description
【０００１】[0001]
【産業上の利用分野】本発明は鉄分測定装置に関し，さ
らに詳しくは主として火力発電プラントの貫流ボイラ型
プラントの系統水中に含まれる鉄分の濃度を測定する鉄
分測定装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an iron content measuring device, and more particularly to an iron content measuring device for mainly measuring the concentration of iron contained in system water of a once-through boiler type plant of a thermal power plant.
【０００２】[0002]
【従来の技術】火力発電プラントの高温，高圧化に伴い
水質管理基準も厳しいものとなっているが，特に貫流ボ
イラ型プラントでは各工程ごとに系統水中の全鉄濃度が
規定されており，高精度で迅速な全鉄濃度の把握が要請
されている。全鉄測定において，最も工数が長くかかる
操作はサンプル中の粒子またはコロイド状の鉄を溶解さ
せる段階（前処理）である。鉄分の測定方法はＪＩＳ
Ｂ８２２４「ボイラの給水及びボイラ水の試験方法」に
示されている。この方法はサンプルに塩酸を加えて１／
１０の体積まで濃縮することにより鉄を溶解させるもの
であるが，通常この操作だけで３０〜６０分程度必要で
ある。2. Description of the Related Art Water quality control standards have become strict with the increase in temperature and pressure of thermal power plants. Accurate and quick understanding of total iron concentration is required. In the measurement of total iron, the operation that takes the longest time is the step of dissolving iron particles or colloid in the sample (pretreatment). JIS measurement method
B8224 “Boiler Water Supply and Boiler Water Testing Methods”. This method adds hydrochloric acid to the sample
Although iron is dissolved by concentrating it to a volume of 10, usually this operation alone requires about 30 to 60 minutes.
【０００３】前処理時間を短縮するものとしては特開昭
６３−２０１５６４号公報に記載された方法が知られて
いる。図６は上記公報に記載された鉄分溶解方法であ
る。図において１はサンプル水導入管，２はサンプル水
入り口弁，３は送水ポンプ，４は流量計，５は塩酸注入
ポンプ，６は塩酸注入管，７は塩酸注入弁，８はサンプ
ル水加熱器，９は冷却器，１０は調圧弁，１１は弁，１
２は全鉄検出計，１３はプローブ管，１４はサンプル水
出口管，１５はサンプル水出口弁である。A method described in Japanese Patent Laid-Open No. 63-201564 is known as a method for shortening the pretreatment time. FIG. 6 shows the iron-dissolving method described in the above publication. In the figure, 1 is a sample water inlet pipe, 2 is a sample water inlet valve, 3 is a water feed pump, 4 is a flow meter, 5 is a hydrochloric acid injection pump, 6 is a hydrochloric acid injection pipe, 7 is a hydrochloric acid injection valve, and 8 is a sample water heater. , 9 is a cooler, 10 is a pressure regulating valve, 11 is a valve, 1
Reference numeral 2 is an all-iron detector, 13 is a probe tube, 14 is a sample water outlet tube, and 15 is a sample water outlet valve.
【０００４】上記の構成において，サンプル水がサンプ
ル導入管１によって採取され，サンプル水入り口弁２，
送水ポンプ３，流量計４から高圧下にあるサンプル水加
熱器８に送水される。一方塩酸注入ポンプ５から塩酸注
入管６，塩酸注入弁７を介して上記サンプル水上に塩酸
が１〜１０％程度となるよう注入混合されサンプル水加
熱器８で１００〜１５０℃に加熱され,上記サンプル中
のコロイド及び粒子状の鉄分は従来より大幅に短い滞留
時間で溶解される。その後冷却器９で冷却され調圧弁１
０を介して減圧される。そしてこの液は弁１１を経て全
鉄検出計１２に搬送され，その含有鉄分が測定されブロ
ー管１３から排出される。上記の鉄分溶解方法は溶解が
チューブ内の流れの中で行うのでクロマトグラフィやフ
ローインジェクション検出法（ＦＩＡ）との接続も容易
である。In the above structure, the sample water is collected by the sample introduction pipe 1, and the sample water inlet valve 2,
Water is sent from the water pump 3 and the flow meter 4 to the sample water heater 8 under high pressure. On the other hand, hydrochloric acid is injected and mixed from the hydrochloric acid injection pump 5 through the hydrochloric acid injection pipe 6 and the hydrochloric acid injection valve 7 so that the hydrochloric acid is about 1 to 10%, and is heated to 100 to 150 ° C. by the sample water heater 8 to The colloidal and particulate iron in the sample is dissolved with a residence time significantly shorter than before. After that, it is cooled by the cooler 9 and the pressure regulating valve 1
Depressurized through 0. Then, this liquid is conveyed to the total iron detector 12 through the valve 11, and the iron content thereof is measured and discharged from the blow pipe 13. In the above iron dissolution method, the dissolution is carried out in the flow in the tube, and therefore, the connection with the chromatography or the flow injection detection method (FIA) is easy.
【０００５】[0005]
【発明が解決使用とする課題】しかしながら，上記の従
来例においては鉄濃度が高い場合やサンプルの主成分が
溶解しにくいマグネタイトの場合は溶解が不完全であ
り，測定に負の誤差を与える要因となっている。本発明
は上記従来技術の問題点を解決するためになされたもの
で，サンプルの加熱手段としてマイクロ波加熱を用いる
ことにより，サンプル中の粒子状の鉄をほぼ完全に溶解
するとともに溶解した鉄を定量可能なＦＩＡで検出する
ことにより粒子状の鉄を含むサンプルを迅速に定量する
ことが可能な鉄分測定装置を提供することを目的とす
る。However, in the above-mentioned conventional example, when the iron concentration is high or when the main component of the sample is magnetite, which is difficult to dissolve, the dissolution is incomplete and causes a negative error in the measurement. Has become. The present invention has been made to solve the above-mentioned problems of the prior art. By using microwave heating as a heating means for a sample, the particulate iron in the sample is almost completely dissolved and the dissolved iron is removed. An object of the present invention is to provide an iron content measuring device capable of rapidly quantifying a sample containing particulate iron by detecting with a quantifiable FIA.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決する為に
本発明は，鉄の粒子を含むサンプル液と，このサンプル
液を取り込んで搬送する搬送液と，この搬送液に第１反
応液を注入する第１反応液注入手段と，前記サンプル液
を含む搬送液と第１反応液の混合液を加圧する加圧手段
と，前記加圧された状態の混合液にマイクロ波を照射し
て加熱するマイクロ波加熱器と，この加熱された混合液
に複数の反応液を加えて順次反応させる反応手段と，こ
の複数回反応させた反応液に含まれる鉄分を検出する鉄
分検出手段からなることを特徴とするものである。In order to solve the above-mentioned problems, the present invention provides a sample liquid containing iron particles, a carrier liquid which takes in and carries the sample liquid, and a first reaction liquid in the carrier liquid. First reaction liquid injection means for injecting, pressurizing means for pressurizing the mixed liquid of the carrier liquid containing the sample liquid and the first reaction liquid, and heating the mixed liquid in the pressurized state by microwave irradiation. A microwave heater, a reaction means for adding a plurality of reaction liquids to the heated mixed liquid to sequentially react, and an iron content detecting means for detecting iron content in the reaction liquids reacted a plurality of times. It is a feature.
【０００７】[0007]
【作用】搬送液に取り込まれたサンプル液は第１反応液
と混合されて加圧される。加圧された混合液はマイクロ
波加熱器で加熱されることにより粒子状の鉄が完全に溶
解される。鉄が溶解した混合液は複数種の反応液で順次
反応され，可視吸光検出器に送られて含有鉄分が検出さ
れる。The sample liquid taken into the carrier liquid is mixed with the first reaction liquid and pressurized. The pressurized mixed liquid is heated by the microwave heater to completely dissolve the particulate iron. The mixed solution in which iron is dissolved is sequentially reacted with a plurality of types of reaction solutions and sent to a visible absorption detector to detect the iron content.
【０００８】[0008]
【実施例】図１は本発明による鉄分測定装置の一実施例
を示す構成図である。図において１ａは図示しない液槽
から搬送液（例えば純水）を送出する第１ポンプであ
り，１ｂは図示しない液槽から第１反応液（例えば１規
定の塩酸）を送出する第２ポンプ，１ｃは図示しない液
槽から第２反応液（還元剤；例えば塩酸ヒドロキシルア
ミン１０％溶液）を送出する第３ポンプ，１ｄは図示し
ない液槽から発色液（例えばＴＰＴＺ（２，４，６−ト
リ−２−ピリジル−１，３，５−トリアジン）０．００
１ｍｏｌ／ｌ溶液）を送出する第４ポンプ，１ｅは図示
しない液槽から緩衝液（例えば酢酸アンモニウム５０％
溶液）を送出する第５ポンプである。1 is a block diagram showing an embodiment of an iron content measuring apparatus according to the present invention. In the figure, 1a is a first pump for delivering a carrier liquid (for example, pure water) from a liquid tank (not shown), 1b is a second pump for delivering a first reaction liquid (for example, 1N hydrochloric acid) from a liquid tank (not shown), 1c is a third pump for delivering a second reaction liquid (reducing agent; for example, 10% solution of hydroxylamine hydrochloride) from a liquid tank (not shown), and 1d is a color developing liquid (for example, TPTZ (2,4,6-triethyltrioxide) from a liquid tank (not shown). -2-pyridyl-1,3,5-triazine) 0.00
A fourth pump for delivering 1 mol / l solution, 1e is a buffer solution (for example, 50% ammonium acetate) from a liquid tank (not shown).
It is a fifth pump for delivering a solution).
【０００９】２はサンプル液を手動で注入する場合に使
用する第１切換弁，３はサンプル液を自動的に注入する
場合に使用する第２切換弁であり，図は自動で使用する
場合を示している。５は耐薬品性があり，高温，高圧に
耐えるポリエーテルエーテルケトン（ＰＥＥＫ）等の第
１反応コイルである。この第１コイル５の後段には絞り
としての抵抗管６が接続されている。この抵抗管は例え
ば内径０．２ｍｍ，長さ５〜１０ｍ程度を有するもので
冷却管としても機能する。Reference numeral 2 is a first switching valve used when manually injecting the sample liquid, and 3 is a second switching valve used when automatically injecting the sample liquid. Shows. Reference numeral 5 is a first reaction coil made of polyetheretherketone (PEEK) or the like which has chemical resistance and can withstand high temperature and high pressure. A resistance tube 6 as a diaphragm is connected to the subsequent stage of the first coil 5. This resistance tube has, for example, an inner diameter of 0.2 mm and a length of about 5 to 10 m, and also functions as a cooling tube.
【００１０】７は第１反応コイル５を収納して加熱する
マイクロ波加熱器（例えば電子レンジ）であり，この加
熱器内にはマグネトロンの自己加熱を防ぐために保護用
の水循環チューブ（内径４ｍｍ，長さ数ｍ程度…図示せ
ず）が配置されている。上記第１，第２ポンプ（１ａ，
１ｂ），切換弁（２，３）〜抵抗管６までは前処理部４
として機能する。Reference numeral 7 denotes a microwave heater (for example, a microwave oven) which houses and heats the first reaction coil 5, and in this heater, a protective water circulation tube (inner diameter: 4 mm, to prevent self heating of the magnetron). A length of about several meters (not shown) is arranged. The first and second pumps (1a,
1b), the switching valve (2, 3) to the resistance tube 6 are the pretreatment section 4
Function as.
【００１１】１０ａは抵抗管６の後段に配置された第２
反応コイルであり，このコイルの前段には第３ポンプ１
ｃからの還元剤が注入される。１０ｂは第２反応コイル
の後段に接続された第３反応コイルであり，このコイル
の前段には第４ポンプ１ｄからの発色液が注入される。
そして１０ｃは第３反応コイル１０ｂの後段に配置され
た第３反応コイルであり，このコイルの前段には第５ポ
ンプ１ｅからの緩衝剤が注入される。１５は第３コイル
の後段に配置され鉄分の検出を行う可視吸光検出器であ
る。なお，反応コイル１０ａ，１０ｂ，１０ｃは測定値
の再現性を向上させるために４０℃程度の恒温槽２０に
収納されている。Reference numeral 10a denotes a second tube arranged at the rear stage of the resistance tube 6.
It is a reaction coil, and the third pump 1 is placed in front of this coil
The reducing agent from c is injected. Reference numeral 10b is a third reaction coil connected to the latter stage of the second reaction coil, and the coloring liquid from the fourth pump 1d is injected to the front stage of this coil.
10c is a third reaction coil arranged in the latter stage of the third reaction coil 10b, and the buffer agent from the fifth pump 1e is injected in the front stage of this coil. Reference numeral 15 is a visible light absorption detector which is arranged after the third coil and detects the iron content. The reaction coils 10a, 10b, 10c are housed in a constant temperature bath 20 at about 40 ° C. in order to improve the reproducibility of measured values.
【００１２】上記の構成において第１ポンプからの純水
は第１，第２切換弁の実線の経路を経て第１反応コイル
５，抵抗管，第２〜第４反応コイルを通り可視吸光検出
器側へ流れており，第２〜第５ポンプからの反応液も所
定の量と濃度で注入されている。この時サンプル液は第
２切換弁３の矢印Ａに注入され実線に沿って流れ計量管
３ａを介して矢印Ｂ方向に排出されている。なお，この
時反応コイル１を通過する混合液は抵抗管６により５〜
１０ｋｇｆ／ｃｍ2程度に昇圧されている。また，各反
応チューブは内径０．５ｍｍ，長さ数ｍ程度のＥＴＦＥ
チューブとし，各ポンプの吐出量はそれぞれ毎分０．１
〜２．０ｍｌ程度の適当な量とされる。In the above structure, the pure water from the first pump passes through the paths of the first and second switching valves indicated by the solid lines, passes through the first reaction coil 5, the resistance tube, and the second to fourth reaction coils, and is a visible light absorption detector. Flowing to the side, and the reaction liquids from the second to fifth pumps are also injected at a predetermined amount and concentration. At this time, the sample liquid is injected into the arrow A of the second switching valve 3, flows along the solid line, and is discharged in the direction of arrow B through the measuring pipe 3a. At this time, the mixed liquid passing through the reaction coil 1 is 5
The pressure is increased to about 10 kgf / cm 2 . In addition, each reaction tube has an inner diameter of 0.5 mm and a length of several meters.
As a tube, the discharge rate of each pump is 0.1 min.
It is an appropriate amount of about 2.0 ml.
【００１３】次に所定のタイミングで第２切換弁３が点
線で示す経路に切換わると純水は計量管３ａを流れてい
たサンプル液を取り込んで流れる。同時にマイクロ波加
熱器７がオンとなり流路を流れる混合液を加熱する。こ
の加熱器７により混合液は１００℃以上に加熱されるが
上述のように５〜１０ｋｇｆ／ｃｍ2程度に加圧されて
いるので沸騰することはない。このマイクロ波での加熱
はサンプルが加熱管を通過する時間に合わせて３分程度
経ったらオフになるように設定されているがエネルギー
がコイルを流れる混合液に十分に作用するのでむらなく
加熱することができ，鉄粒子が十分に酸溶解される。Next, when the second switching valve 3 switches to the path shown by the dotted line at a predetermined timing, pure water flows by taking in the sample liquid flowing through the measuring pipe 3a. At the same time, the microwave heater 7 is turned on to heat the mixed liquid flowing in the flow path. The mixed liquid is heated to 100 ° C. or higher by the heater 7, but does not boil because it is pressurized to about 5 to 10 kgf / cm 2 as described above. This microwave heating is set to turn off after about 3 minutes according to the time when the sample passes through the heating tube, but since the energy sufficiently acts on the mixed liquid flowing through the coil, the sample is heated evenly. The iron particles can be sufficiently acid-dissolved.
【００１４】図２は加熱チューブ（ＰＥＥＫ）として内
径０．８ｍｍ（外径１．６ｍｍ）のチューブを用いた場
合の長さと回収率（鉄溶解の程度をＪＩＳ法と比較した
場合の溶解度合）の関係を示すもので，図によれば加熱
管の長さが５ｍ程度であればＪＩＳ法で溶解した場合と
ほぼ同様となっている。従って本実施例では測定時間と
の兼合いも考慮して加熱管の長さを５ｍ程度とした。な
お，この場合サンプルが加熱管を通り抜ける時間は３分
弱であり，測定に要する時間は全体で１０分程度であっ
た。FIG. 2 shows the length and recovery rate when a tube having an inner diameter of 0.8 mm (outer diameter of 1.6 mm) is used as a heating tube (PEEK) (the degree of dissolution when the degree of iron dissolution is compared with the JIS method). According to the figure, if the length of the heating tube is about 5 m, it is almost the same as when melting by the JIS method. Therefore, in this embodiment, the length of the heating tube is set to about 5 m in consideration of the balance with the measurement time. In this case, the time taken for the sample to pass through the heating tube was less than 3 minutes, and the time required for measurement was about 10 minutes in total.
【００１５】図３はサンプル導入量と検出器１５でのピ
ーク高さの関係を示すもので，図によれば検出器の出力
は５００μｌ程度を境として飽和している。このことか
らサンプルの導入量は５００μｌとした。FIG. 3 shows the relationship between the sample introduction amount and the peak height of the detector 15. According to the figure, the output of the detector is saturated at about 500 μl. Therefore, the amount of sample introduced was set to 500 μl.
【００１６】図４（イ），（ロ）は本発明の構成を用い
て２種類の実サンプルを測定した結果を示すもので，サ
ンプルＡ，Ｂ共に再現性よく測定されている。図５は本
発明の装置で測定した全鉄の測定結果とＪＩＳ法との相
関を示す図である。相関係数は０．９８と良好であっ
た。FIGS. 4 (a) and 4 (b) show the results of measurement of two types of real samples using the structure of the present invention. Both samples A and B are measured with good reproducibility. FIG. 5 is a diagram showing the correlation between the measurement results of total iron measured by the apparatus of the present invention and the JIS method. The correlation coefficient was as good as 0.98.
【００１７】[0017]
【発明の効果】以上実施例とともに具体的に説明した様
に本発明によれば，加圧された状態の混合液にマイクロ
波を照射して加熱すると共にその後段に複数の反応液を
加えて順次反応させる反応手段を接続し，その複数回反
応させた反応液に含まれる鉄分を測定するようにしてい
るので粒子状の鉄を含むサンプルを迅速に定量すること
が可能な鉄分測定装置を実現することができる。As described above in detail with reference to the embodiments, according to the present invention, a mixed liquid in a pressurized state is irradiated with microwaves to be heated and a plurality of reaction liquids are added to the subsequent stage. By connecting the reaction means for sequentially reacting and measuring the iron content contained in the reaction solution that has been reacted multiple times, it is possible to realize an iron content measuring device that can quickly quantify a sample containing particulate iron. can do.
【図１】本発明の鉄分測定装置の一実施例を示す構成説
明図である。FIG. 1 is a structural explanatory view showing an embodiment of an iron content measuring device of the present invention.
【図２】加熱チューブの長さと回収率（鉄溶解の程度を
ＪＩＳ法と比較した場合の溶解度合）の関係を示す図で
ある。FIG. 2 is a diagram showing the relationship between the length of a heating tube and the recovery rate (the degree of dissolution when the degree of iron dissolution is compared with the JIS method).
【図３】サンプル導入量と検出器の出力のピーク高さの
関係を示す図である。FIG. 3 is a diagram showing a relationship between a sample introduction amount and a peak height of an output of a detector.
【図４】本発明の構成を用いて２種類の実サンプルを測
定した結果を示す図である。FIG. 4 is a diagram showing the results of measuring two types of real samples using the configuration of the present invention.
【図５】全鉄の測定結果とＪＩＳ法との相関を示す図で
ある。FIG. 5 is a diagram showing the correlation between the measurement results of total iron and the JIS method.
【図６】従来の鉄分測定装置の一実施例を示す構成説明
図である。FIG. 6 is a configuration explanatory view showing an embodiment of a conventional iron content measuring device.
１ａ〜１ｄ 第１〜第５ポンプ ２ 第１切換弁 ３ 第１切換弁 ２ａ，３ａ 計量管 ４ 前処理部 ５ 第１反応コイル ６ 抵抗管（絞り） ７ マイクロ波加熱器 １０ａ〜１０ｃ 第２〜第４反応コイル １５ 可視吸光検出器 ２０ 恒温槽 1a-1d 1st-5th pump 2 1st switching valve 3 1st switching valve 2a, 3a Measuring pipe 4 Pretreatment part 5 1st reaction coil 6 Resistance tube (throttle) 7 Microwave heater 10a-10c 2nd-2 Fourth reaction coil 15 Visible absorption detector 20 Constant temperature bath
Claims (1)
ル液を取り込んで搬送する搬送液と，この搬送液に第１
反応液を注入する第１反応液注入手段と，前記サンプル
液を含む搬送液と第１反応液の混合液を加圧する加圧手
段と，前記加圧された状態の混合液にマイクロ波を照射
して加熱するマイクロ波加熱器と，この加熱された混合
液に複数の反応液を加えて順次反応させる反応手段と，
この複数回反応させた反応液に含まれる鉄分を検出する
鉄分検出手段からなることを特徴とする鉄分測定装置。1. A sample liquid containing iron particles, a carrier liquid for taking in and transporting the sample liquid, and a first carrier for the carrier liquid.
A first reaction solution injecting means for injecting a reaction solution, a pressurizing means for pressurizing a mixed solution of the carrier solution containing the sample solution and the first reaction solution, and a microwave for irradiating the pressurized mixed solution with microwaves. A microwave heater for heating by heating, and a reaction means for adding a plurality of reaction solutions to the heated mixed solution and sequentially performing reaction,
An iron content measuring device comprising an iron content detecting means for detecting iron content contained in the reaction liquid which has been reacted a plurality of times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15018593A JP3237312B2 (en) | 1993-06-22 | 1993-06-22 | Iron measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15018593A JP3237312B2 (en) | 1993-06-22 | 1993-06-22 | Iron measurement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0720113A true JPH0720113A (en) | 1995-01-24 |
| JP3237312B2 JP3237312B2 (en) | 2001-12-10 |
Family
ID=15491376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15018593A Expired - Fee Related JP3237312B2 (en) | 1993-06-22 | 1993-06-22 | Iron measurement device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3237312B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4678250B2 (en) * | 2005-07-08 | 2011-04-27 | 三菱マテリアル株式会社 | Sample solution dissolution treatment apparatus and dissolution treatment method |
| CN102466584A (en) * | 2011-04-22 | 2012-05-23 | 顾青未 | Alkalization method for online sodium ion concentration measurement |
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1993
- 1993-06-22 JP JP15018593A patent/JP3237312B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3237312B2 (en) | 2001-12-10 |
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