干旱区生态环境知识资源中心(Arid): 基于固相萃取的水中多种有毒有害有机污染物富集方法优化

Arid

	基于固相萃取的水中多种有毒有害有机污染物富集方法优化
其他题名	Optimization of Solid-Phase Extraction for Enrichment of Toxic Organic Compounds in Water Samples
	张明全 1; 李锋民 2; 吴乾元 3; 胡洪营 3
来源期刊	环境科学
ISSN	0250-3301
出版年	2013
卷号	34 期号:5 页码:1851-1856
中文摘要	以降低固相萃取杂质、提高目标化合物的回收率为目的,提出了一种基于固相萃取的水中多种有毒有害有机污染物富集方法.用丙酮和二氯甲烷等溶剂洗脱未上样的固相萃取柱,评价了固相萃取各个环节对正构烷烃、酞酸酯等杂质浓度的贡献值,发现85%杂质来自填料的溶出物(以Waters Oasis HLB为例).填料经二氯甲烷、丙酮、甲醇依次索氏提取24 h后,填料的溶出物明显减少,气相色谱图中杂质峰的数量和强度均明显降低.比较了6种常用固相萃取填料在索氏提取后对lgK_(ow)1.46~8.1之间的农药、多环芳烃、酚、酞酸酯等40种目标化合物的回收率,发现Waters Oasis HLB在改性聚苯乙烯-二乙烯基苯填料中回收率最高,平均为77%;Waters SepPak AC-2在活性炭填料中回收率最高,对农药的平均回收率为74%.Waters Oasis HLB和 Waters SepPak AC-2固相萃取柱串联后,目标化合物的回收率明显提高,平均为87%.
英文摘要	A concentration method for enrichment of toxic organic compounds in water samples has been developed based on combined solid-phase extraction (SPE) to reduce impurities and improve recoveries of target compounds.This SPE method was evaluated in every stage to identify the source of impurities.Based on the analysis of Waters Oasis HLB without water samples, the eluent of SPE sorbent after dichloromethane and acetone contributed 85% of impurities during SPE process.In order to reduce the impurities from SPE sorbent, soxhlet extraction of dichloromethane followed by acetone and lastly methanol was applied to the sorbents for 24 hours and the results had proven that impurities were reduced significantly.In addition to soxhlet extraction, six types of prevalent SPE sorbents were used to absorb 40 target compounds, the lgK_(ow) values of which were within the range of 1.46 and 8.1, and recovery rates were compared.It was noticed and confirmed that Waters Oasis HLB had shown the best recovery results for most of the common testing samples among all three styrenedivinylbenzene (SDB) polymer sorbents, which were 77% on average.Furthermore, Waters SepPak AC-2 provided good recovery results for pesticides among three types of activated carbon sorbents and the average recovery rates reached 74%.Therefore, Waters Oasis HLB and Waters SepPak AC-2 were combined to obtain a better recovery and the average recovery rate for the tested 40 compounds of this new SPE method was 87%.
中文关键词	固相萃取 ; 气相色谱质谱联用 ; 酚 ; 酞酸酯 ; 多环芳烃
英文关键词	solid-phase extraction (SPE) GC-MS phenol PAEs PAHs
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:4815347
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229784
作者单位	1.中国海洋大学环境科学与工程学院, 环境模拟与污染控制国家重点联合实验室, 青岛, 山东 266100, 中国; 2.中国海洋大学环境科学与工程学院, 青岛, 山东 266100, 中国; 3.清华大学环境学院, 环境模拟与污染控制国家重点联合实验室;;国家环境保护环境微生物利用与安全控制重点实验室, 北京 100084, 中国
推荐引用方式 GB/T 7714	张明全,李锋民,吴乾元,等. 基于固相萃取的水中多种有毒有害有机污染物富集方法优化[J],2013,34(5):1851-1856.
APA	张明全,李锋民,吴乾元,&胡洪营.(2013).基于固相萃取的水中多种有毒有害有机污染物富集方法优化.环境科学,34(5),1851-1856.
MLA	张明全,et al."基于固相萃取的水中多种有毒有害有机污染物富集方法优化".环境科学 34.5(2013):1851-1856.