抑制型离子色谱法用于监测地热发电厂蒸汽中的化学杂质。

Suppressed ion chromatography for monitoring chemical impurities in steam for geothermal power plants.

作者信息

Santoyo E, Verma S P, Sandoval F, Aparicio A, García R

机构信息

Centro de Investigacíon en Energía (UNAM), Temixco, Mor., Mexico.

出版信息

J Chromatogr A. 2002 Mar 8;949(1-2):281-9. doi: 10.1016/s0021-9673(01)01586-2.

DOI:10.1016/s0021-9673(01)01586-2

PMID:11999745

Abstract

A suppressed ion chromatography (IC) technique has been evaluated as a chemical monitoring tool for detecting major anions (F-, Cl-, NO3- and SO4(2-)) of condensed steam in geothermal power plants. It is shown that the suppressed IC technique provides a suitable means for preventing possible damage to generating equipment in the geothermal industry. An electrical conductivity detector (0.1 microS sensitivity) with an anion-exchange column (IonPac AS4A-SC), a micro-membrane suppressor (AMMS II), and an isocratic high-pressure pump system were successfully used for detecting low concentrations of inorganic anions. Method detection limits for the anions of interest were <0.184 mg/L. Details of the IC methodology as well as some experimental results obtained during its application for the chemical monitoring of geothermal steam pipes are also described.

摘要

一种抑制型离子色谱（IC）技术已被评估为一种化学监测工具，用于检测地热发电厂冷凝蒸汽中的主要阴离子（F-、Cl-、NO3-和SO4(2-)）。结果表明，抑制型离子色谱技术为防止地热行业发电设备可能受到的损害提供了一种合适的方法。配备阴离子交换柱（IonPac AS4A-SC）、微膜抑制器（AMMS II）和等度高压泵系统的电导率检测器（灵敏度为0.1微西门子）成功用于检测低浓度的无机阴离子。目标阴离子的方法检测限<0.184 mg/L。还描述了离子色谱方法的详细信息以及在其应用于地热蒸汽管道化学监测期间获得的一些实验结果。