摘要
研究一种测定水体中总有机卤化物（ＴＯＸ）含量的方法。分别通过气提和乙醚萃取并使用高温热解分光光度法测定挥发性有机卤（ＰＯＸ）和非挥发有机卤（ＮＰＯＸ）。方法检测限为ｌμｍｏｌ／Ｌ，变异系数＜３％，测得１０种不同类型的模拟化合物的平均口收率为８１％。自来水测定结果ＴＯＸ为２１７—４８３μｇ／Ｌ。
A modified determination method for TOX was described, whereby purgeable and nonpurgeable fractions were measured respectively. Purgeable organic halogen(POX) was stripped with a mixture of N, and O2; and nonpurgeable organic halogen(NPOX) was enriched with a Liguidliquid Extraction (LLE) method. Both were introduced into a combustion system to change them into X-, which were then determined with spectrophotometry. There was a detection limit of about 1 μmol/L, a variation coeffcient of less than 3%, with an average recovery of 81 % for 10 model. compounds. The TOX concentration in the tap water from Jiangsu province was from about 217 to 483 ig/L.
出处
《环境科学》
CAS
CSSCI
CSCD
北大核心
1995年第4期57-60,共4页
Environmental Science
基金
国家"八五"科技攻关课题
关键词
总有机卤化物
高温
热解
分光光度法
水质分析
purgeable organic halogen, nonpurgeable organic halogen, total organic halogen,spectrophotometry.
