Determination of hexachlorobutadiene, pentachlorobenzene, and hexachlorobenzene in waste incineration fly ash using ultrasonic extraction followed by column cleanup and GC-MS analysis
Determination of hexachlorobutadiene, pentachlorobenzene, and hexachlorobenzene in waste incineration fly ash using ultrasonic extraction followed by column cleanup and GC-MS analysis
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DOI：
10.1007/s00216-018-0849-5
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发表时间：
2018-02
影响因子：
4.3
通讯作者：
Haiyan Zhang;Lei Jiang;Xin Zhou;T. Zeng;Zhiqiao He;Xinwen Huang;Jianmeng Chen;Shuang Song
中科院分区：
文献类型：
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作者：
Haiyan Zhang;Lei Jiang;Xin Zhou;T. Zeng;Zhiqiao He;Xinwen Huang;Jianmeng Chen;Shuang Song
六氯丁二烯（HCBD）因其广泛的工业应用和潜在的遗传毒性和致癌性而被《斯德哥尔摩公约》列为新的控制性持久性有机污染物。然而，关于废物焚烧等无意来源释放六氯丁二烯的信息有限。飞灰是废物焚烧的主要产物之一，必须对飞灰中的六氯丁二烯进行识别和量化。本研究提出了一种基于超声波提取结合硅胶-弗罗里硅土柱净化、气相色谱-质谱检测的垃圾焚烧飞灰中六氯丁二烯的简单测定方法。同时测定了五氯苯和六氯苯两种典型的持久性有机污染物。对影响萃取效率和仪器检测质量的参数进行了研究。在最佳实验条件下，所有目标分析物均达到了较高的灵敏度（检测限0.25-0.53 ng g-1），在5-500 ng g-1加标水平下的回收率（64.0-71.4%）和良好的重复性（相对标准偏差（n= 3）为14%或更低）。通过对华东地区6个不同垃圾焚烧厂的真实的飞灰样品的分析，验证了该方法的有效性。在这些样本中检测到的六氯丁二烯浓度（1.39-97.6纳克/克）与五氯苯（1.22-150纳克/克）和六氯苯（0.82-120纳克/克）的浓度相当，这表明不应忽视废物焚烧飞灰中残留的六氯丁二烯以及五氯苯和六氯苯。这些结果首次证实，废物焚烧是中国六氯丁二烯的一个无意来源。GC-MS气相色谱-质谱法，Ph-d10菲-d10
Hexachlorobutadiene (HCBD) was listed as a new controlling persistent organic pollutant in the Stockholm Convention because of its wide industrial applications and potential genotoxicity and carcinogenicity. However, only limited information exists on the release of HCBD from unintentional sources, such as waste incineration. Identification and quantification of HCBD in fly ash, one of the major outputs of waste incineration, is imperative. This work presents a simple method for determining HCBD in waste incineration fly ash based on ultrasonic extraction coupled with a silica gel–Florisil column cleanup followed by gas chromatography–mass spectrometry detection. Two typical persistent organic pollutants, pentachlorobenzene (PeCB) and hexachlorobenzene (HCB), were measured simultaneously. The parameters that influence the extraction efficiency and the quality of instrument detection were studied. Under the optimum experimental conditions, high sensitivity (detection limit 0.25–0.53 ng g-1), acceptable recoveries (64.0–71.4%) at spiking levels of 5–500 ng g-1, and good repeatability [relative standard deviation (n= 3) of 14% or less] were achieved for all target analytes. The validation of this method was performed by analysis of six real fly ash samples from different waste incinerators in eastern China. The concentrations of HCBD detected in these samples (1.39–97.6 ng g-1) were comparable to those of PeCB (1.22–150 ng g-1) and HCB (0.82–120 ng g-1), indicating that the residual HCBD as well as PeCB and HCB in waste incineration fly ash should not be ignored. The results confirm for the first time that waste incineration is an unintentional source of HCBD in China.Graphical abstractAn analytical method for hexachlorobutadiene, pentachlorobenzene, and hexachlorobenzene in fly ash from waste incineration. GC-MS gas chromatography–mass spectrometry, Ph-d10 phenanthrene-d10