CAJ | 학술논문

从莱州湾附近河流采集了36个表层沉积物样品，采用高效液相色谱耦合三重四极杆串联质谱的分析方法对沉积物中的六溴环十二烷(HBCDs)3种异构体进行了测定，目的是表征研究区域内HBCDs的污染水平和组成特征，并探讨其分布、来源及影响因素。结果表明，莱州湾河流沉积物中∑HBCDs的含量范围为0.03~20.17 ng/g dw (均值是2.14 ng/g dw)；较国内外其他河流，该研究区域HBCDs含量水平较低。HBCDs异构体组成各不相同，除1个站位外，其他站位样品中γ-HBCD占主导地位(52.3%~97.3%，均值72.4%)，但是在农业区α-HBCD相对丰度较高。对HBCDs的分布特征及来源分析得出，含量较高的站点多集中在工业区，呈现出明显的点源特征；而远离工业区的采样点， HBCDs 可能主要来自大气的传输和沉降，且 HBCDs的含量与TOC含量呈现出较好的相关性，表明TOC是非工业区分布的一个控制因素。
종래주만부근하류채집료36개표층침적물양품，채용고효액상색보우합삼중사겁간천련질보적분석방법대침적물중적륙추배십이완(HBCDs)3충이구체진행료측정，목적시표정연구구역내HBCDs적오염수평화조성특정，병탐토기분포、래원급영향인소。결과표명，래주만하류침적물중∑HBCDs적함량범위위0.03~20.17 ng/g dw (균치시2.14 ng/g dw)；교국내외기타하류，해연구구역HBCDs함량수평교저。HBCDs이구체조성각불상동，제1개참위외，기타참위양품중γ-HBCD점주도지위(52.3%~97.3%，균치72.4%)，단시재농업구α-HBCD상대봉도교고。대HBCDs적분포특정급래원분석득출，함량교고적참점다집중재공업구，정현출명현적점원특정；이원리공업구적채양점， HBCDs 가능주요래자대기적전수화침강，차 HBCDs적함량여TOC함량정현출교호적상관성，표명TOC시비공업구분포적일개공제인소。
Thirty-six surface sediment samples were collected from nearly ten rivers or distributaries in the Laizhou Bay area. Three diastereoisomers of hexabromocyclododecanes (HBCDs) were analyzed by high performance liquid chromatograph, coupled to a triple quadrupole mass spectrometer (HPLC-MS/MS). The concentrations of HBCDs ranged from 0.03 to 20.17 ng/g dw, with a mean vale of 2.14 ng/g dw. The study area is less contaminated by HBCDs in comparison with other riverine regions around the world. HBCD diastereoisomer profiles differed among the sediment samples, and γ-HBCD (52.3%-97.3%, mean 72.4%) was the dominant isomer (except one sample), whereasα-HBCD contributions were relatively high in sediments from the rural areas. Higher concentrations occurred mostly at industry areas, indicating the sources of HBCD was direct discharge from local factories;however, in the less industrial areas, including urban areas and rural areas, sources of HBCDs were from atmospheric transport and deposition. Moreover, relatively strong correlation between TOC and HBCD concentrations suggested that TOC is the control factor for HBCD distribution in the less industrial areas.