发明名称 |
TRACE ANION DETECTION IN LIQUID SAMPLES |
摘要 |
<p>The present invention provides a method of detecting trace anions in solutions at a parts per billion (ppb) concentration level or less using existing anion detection technology, by employing a novel sample preparation method conducted prior to injection into a detection unit. The method includes the steps of: adding a precipitant to at least a portion of the solution; evaporating the solution, whereby a trace anion-rich solution is formed; and detecting the level of the trace anions in the trace anion-rich solution to at least a ppb concentration level. As such, any existing detection unit designed for measuring anions, known to those skilled in the art, can be used without modification. This results in a cost and time effective method of detecting trace anions in solution at a ppb concentration level. The invention also provides a system for effectuating the novel method of the present invention.</p> |
申请公布号 |
WO02072238(A1) |
申请公布日期 |
2002.09.19 |
申请号 |
WO2002US03664 |
申请日期 |
2002.02.07 |
申请人 |
ARCH SPECIALTY CHEMICALS, INC. |
发明人 |
VAN TENDELOO, STEVEN;STEURS, PETER |
分类号 |
G01N1/40;G01N27/28;G01N31/02;(IPC1-7):B01D50/00 |
主分类号 |
G01N1/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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