干旱区生态环境知识资源中心(Arid): 新疆干旱区土壤中苯系物的顶空气相色谱/质谱测定方法研究

Arid

	新疆干旱区土壤中苯系物的顶空气相色谱/质谱测定方法研究
其他题名	Determination of benzene series in soil of arid regions by gas chromatography-mass spectrometry with headspace extraction
	李潘 1; 文方 2; 苏玉红 1; 程艳 2
来源期刊	环境污染与防治
ISSN	1001-3865
出版年	2013
卷号	35 期号:11 页码:29-32
中文摘要	采用顶空气相色谱/质谱联用(HS-GC/MS)法测定干旱区土壤中苯系物(BTEX)含量,对顶空平衡温度、顶空平衡时间以及基质修正液加入量进行了分析和优化,并分析了方法的回收率和精密度。结果表明,优化顶空参数为基质修正液加入量5mL、顶空平衡温度45℃、顶空平衡时间10min;BTEX浓度与峰面积线性相关系数范围为0.996~0.999;苯,甲苯,乙苯,间、对二甲苯的平均回收率分别为81.5%、86.7%、94.4%、99.9%,相对标准偏差分别为6.62%、5.43%、4.51%、4.28%;BTEX检出限(按信噪比为3倍计)为0.076~0.204mug/kg;定量限(按信噪比为10倍计)为0.254~0.681mug/kg。该方法操作简单、回收率高、重现性好、灵敏度高,可为干旱区土壤中BTEX污染的监测和管理提供技术支撑。
英文摘要	A detection method of gas chromatography-mass spectrometry with static headspace extraction(HSGC/ MS)was established to detect benzene series(BTEX)in soil of arid regions.In order to carefully characterize the performance of the detection method,several affecting parameters were studied in detail,such as equilibrium temperature, equilibrium time and the addition amount of matrix modifying solution.The recoveries and precisions of the method were calculated.Results showed that the optimize conditions for headspace procedure were 5mL of matrix modifying solution,equilibrium temperature 45℃and equilibrium time 10minutes.Under these conditions,correlation coefficients between BTEX concentrations and peak areas ranged 0.996-0.999.The average recoveries of benzene, toluene,ethylbenzene and m,p-xylene were 81.5%,86.7%,94.4%,99.9% with the relative standard deviations(RSD,n=6)were 6.62%,5.43%,4.51%and 4.28%.The limits of detection(signal to noise ratio(S/N)= 3)were 0.076-0.204mug/kg.The limits of quantification(S/N=10)were 0.254-0.681mug/kg.The method is simple, accurate,reliable and sensitive,it would provide technical support for monitoring and management of soil contaminated with BTEX in arid regions.
中文关键词	干旱区 ; 土壤
英文关键词	BTEX HS-GC/MS arid regions soil BTEX HS-GC/MS
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5005856
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229800
作者单位	1.新疆大学资源与环境科学学院, 乌鲁木齐, 新疆 830046, 中国; 2.新疆环境保护科学研究院, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	李潘,文方,苏玉红,等. 新疆干旱区土壤中苯系物的顶空气相色谱/质谱测定方法研究[J]. 新疆大学,2013,35(11):29-32.
APA	李潘,文方,苏玉红,&程艳.(2013).新疆干旱区土壤中苯系物的顶空气相色谱/质谱测定方法研究.环境污染与防治,35(11),29-32.
MLA	李潘,et al."新疆干旱区土壤中苯系物的顶空气相色谱/质谱测定方法研究".环境污染与防治 35.11(2013):29-32.