摘要
采用吹扫捕集-气相色谱/质谱法,通过统计全国多家实验室的测定数据和实际样品测试两种方法,对水中苯、甲苯、乙苯、间/对二甲苯、邻二甲苯、苯乙烯和异丙苯8种苯系物的平行样测定相对偏差、空白加标回收率及实际样品加标回收率3个质控指标进行了研究,分别给出每种苯系物的质控指标评价标准,提出其平行样测定相对偏差为6.5%～13.2%;空白加标浓度为0.01～80μg/L时,空白加标回收率的范围为78%～87%;样品测定浓度为未检出～60μg/L、加标浓度在0.2～150μg/L时,实际样品加标回收率范围为74%～122%。
Three quality control index of eight kinds of aromatic hydrocarbons,including relative bias of duplicates,recovery of blank spike and sample spike,were studied by sample test using purge and trap-gas chromatography-mass spectroscopy,and also by evaluating data collected from many labs national-widely.The quality control index were produced according to every target.The results showed that the maximum relative bias should be within 6.5%~13.2%;the blank recovery should be within 78%~87% when the spiking concentration was 0.01~80μg/L;The sample recovery should be within 74%~122% when the sample concentration was ND^60μg/L,and the spiking concentration was 0.2~150μg/L.
出处
《中国环境监测》
CAS
CSCD
北大核心
2011年第B10期30-33,共4页
Environmental Monitoring in China
基金
国家"水体污染控制与治理"重大科技专项(2009ZX07527-003)
关键词
苯系物
质控指标
平行样相对偏差
空白回收率
样品回收率
Aromatic hydrocarbon
Quality control index
Relative bias of duplicates
Blank recovery
Sample recovery
作者简介
胡冠九（1969-），女，江苏沐阳人，博士，研究员级高级工程师．
