TEST WATER MONITORING METHOD AND DEVICE

PROBLEM TO BE SOLVED: To provide a test water monitoring method with which, even when an analysis object substance in test water is in minute quantities, it is possible to concentrate the analysis object substance by a compact device, calculate the density of the analysis object substance in the tes...

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Bibliographische Detailangaben
1. Verfasser: HOSHI SHIGEYUKI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a test water monitoring method with which, even when an analysis object substance in test water is in minute quantities, it is possible to concentrate the analysis object substance by a compact device, calculate the density of the analysis object substance in the test water from its concentrated density, and monitor it with high accuracy.SOLUTION: A solution of prescribed adsorbent density is added to test water W from adsorbent solution supply means 3. The amount of the adsorbent solution added is such that an adsorbent/analysis object substance ratio is 5 or greater, with the adsorbent's capability of adsorbing the analysis object substance used as a reference. The test water W with this adsorbent added is processed by an UF membrane 2. Subsequently, the density of the analysis object substance in brine water W2 (brine density) is measured. Further, the flow rate of the brine water W2 is measured by an integrating flowmeter 13. Then, the density of the analysis object substance in the test water W is calculated from the brine density of the analysis object substance, the flow rate of the brine water W2, and the supply flow rate of the test water W.SELECTED DRAWING: Figure 1 【課題】 検水中の分析対象物質が極微量であっても、小型の装置によって分析対象物質を濃縮し、濃縮された分析対象物質の濃度から検水中の濃度を換算して精度良くモニタリングすることが可能な検水のモニタリング方法を提供する。【解決手段】 検水Wに吸着剤溶液の供給手段3から所定の吸着剤濃度の溶液を添加する。吸着剤溶液の添加量は、該吸着剤の分析対象物質の吸着能を基準として、吸着剤/分析対象物質の比を5以上とする。この吸着剤を添加した検水WをUF膜2で処理する。続いてブライン水W2における分析対象物質の濃度(ブライン濃度)を測定する。さらにブライン水W2の流量を積算流量計13で計測する。そして、これら分析対象物質のブライン濃度とブライン水W2の流量と検水Wの給水流量とから、検水Wにおける分析対象物質の濃度を算出する。【選択図】 図1