气相色谱-质谱法测定食品接触塑料制品中氯苯和二氯苯特定迁移量  

Determination of Specific Migration Amounts of Chlorobenzene and Dichlorobenzenes in Plastic Products in Contact with Food by Gas Chromatography-Mass Spectrometry

作　　者：刘艇飞 孙春燕 魏魏 陈彤 吕先敏 LIU Ting-fei;SUN Chun-yan;WEI Wei;CHEN Tong;LÜXian-min(Taizhou Customs Comprehensive Technology Service Centre,Taizhou 318000,China)

机构地区：[1]台州海关综合技术服务中心,浙江台州318000

出　　处：《分析测试学报》2025年第4期689-695,共7页Journal of Instrumental Analysis

摘　　要：按照GB 31604.1-2023和GB 5009.156-2016的规定,采用水基模拟物(4%乙酸溶液、10%乙醇溶液、20%乙醇溶液、50%乙醇溶液)、含油脂食品模拟物(橄榄油)和化学替代溶剂(95%乙醇溶液和异辛烷)进行食品接触塑料制品迁移试验。所得浸泡液分别采用顶空或液体直接进样的方式进行气相色谱-质谱分析,同位素内标法定量。氯苯、1,2-二氯苯、1,3-二氯苯和1,4-二氯苯4种目标物在不同食品模拟物中均呈良好线性关系,线性范围为0.020~0.50 mg/L(或mg/kg),相关系数(r^(2))均不小于0.9975。4种目标物的方法检出限均为0.01 mg/kg,定量下限均为0.02 mg/kg。在0.02、0.05、0.1 mg/L(或mg/kg)加标水平下的平均加标回收率为83.0%~110%,相对标准偏差(RSD,n=6)为1.8%~11%。该方法操作简便、准确可靠,可满足食品接触塑料制品中氯苯和二氯苯特定迁移量的定性和定量检测。Plastic products in contact with food are subjected to migration tests using water-based simulants(4%acetic acid solution,10%ethanol solution,20%ethanol solution,50%ethanol solution),oily food simulant(olive oil)and alternative volatile media(95%ethanol solution and isooctane)in accordance with the provisions of GB 31604.1-2023 and GB 5009.156-2016.The obtained soaking solution was analyzed by gas chromatography-mass spectrometry using headspace or liquid direct injection,and quantified by isotope internal standard method.The four target compounds,chlorobenzene,1,2-dichlorobenzene,1,3-dichlorobenzene and 1,4-dichlorobenzene,showed good linear relationships in different food simulants,with a linear range of 0.020-0.50 mg/L(or mg/kg)and correlation coefficients(r^(2))not less than 0.9975.The detection limits of four target substances were all 0.01 mg/kg,and the quantification limits were all 0.02 mg/kg.The average spiked recoveries at levels of 0.02,0.05 and 0.10 mg/L(or mg/kg)were 83.0%to 110%,with relative standard deviations(RSDs)ranging from 1.8%to 11%(n=6).This method is easy to operate,accurate and reliable,and can meet the qualitative and quantitative detection of specific migration amounts of chlorobenzene and dichlorobenzene in plastic products in contact with food.

关 键 词：气相色谱-质谱 同位素内标 食品接触 塑料制品 氯苯 二氯苯 

分 类 号：O657.7[理学—分析化学] TS206.4[理学—化学]