气相色谱测定海绵文胸中甲苯二异氰酸酯残留

引用本文: 王爱霞, 叶平, 黄楠, 陈妍, 李兴根. 气相色谱测定海绵文胸中甲苯二异氰酸酯残留[J]. 色谱, 2017, 35(6): 665-668. doi: 10.3724/SP.J.1123.2017.01029 shu

Citation: WANG Aixia, YE Ping, HUANG Nan, CHEN Yan, LI Xinggen. Determination of residual toluene diisocyanate in sponge bra by gas chromatography[J]. Chinese Journal of Chromatography, 2017, 35(6): 665-668. doi: 10.3724/SP.J.1123.2017.01029 shu

气相色谱测定海绵文胸中甲苯二异氰酸酯残留

泰州市产品质量监督检验中心, 国家精细化学品质量监督检验中心, 江苏泰州 225300
基金项目:
江苏省质量技术监督局风险监测项目（322015120013）.

摘要: 建立了气相色谱-内标法测定海绵文胸中的甲苯二异氰酸酯（TDI）残留量。样品经均质处理后，用经脱水处理的乙酸乙酯超声萃取25 min，过滤净化后，采用Agilent DB-624色谱柱（30 m×0.32 mm×1.8 μm）分析，柱温采用程序升温，检测器为氢火焰离子化检测器，检测器温度为250 ℃，进样口温度为180 ℃，载气为氮气。结果表明：甲苯二异氰酸酯在10~200 mg/L范围内峰面积与质量浓度线性关系良好，线性相关系数（R²）为0.9989，平均回收率为80.5%~91.6%，RSD不大于7.9%（n=6），方法的检出限和定量限分别为10 mg/kg和100 mg/kg。在优化条件下，对生产企业、实体店和电商平台采购的100批次样品进行了检测。该方法操作简单、耗时短、灵敏度高、稳定性好，应用于日常检测可大大降低检测成本，缩短检测周期，具有实际应用价值。

关键词:

English

Determination of residual toluene diisocyanate in sponge bra by gas chromatography

Product Quality Supervising and Inspecting Center of Taizhou City, China National Supervision & Testing Center of Fine Chemicals, Taizhou 225300, China
Received Date: 22 January 2017
Fund Project:
Risk Monitoring Item of Jiangsu Bureau of Quality and Technical Supervision (No. 322015120013).

Abstract: A gas chromatography (GC) with internal standard method was developed for the determination of residual toluene diisocyanate (TDI) in sponge bra. The samples were extracted with ethyl acetate dehydrated, and cleaned up with 0.22 μm microfiltration membrane. The residual toluene diisocyanate was separated on a DB-624 capillary column using temperature programming. The flame ionization detector (FID) was used at 250 ℃. The inlet temperature was 180 ℃ with nitrogen as carrier gas. The linear range was 10-200 mg/L (R²=0.9989) for TDI. The average recovery ranged from 80.5% to 91.6% with RSD not more than 7.9%(n=6). The limit of detection (LOD) and limit of quantification (LOQ) were 10 mg/kg and 100 mg/kg, respectively. The developed method was then utilized to analyse the 100 batches of sponge bra samples from the manufacturing enterprises, the entity shops and electric business platforms. The method is simple, time-saving and environment friendly with high sensitivity and good reproducibility, and has practical application value due to its low-cost and short-circle.

Key words:

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气相色谱测定海绵文胸中甲苯二异氰酸酯残留

English

Determination of residual toluene diisocyanate in sponge bra by gas chromatography

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中国化学会秘书处

气相色谱测定海绵文胸中甲苯二异氰酸酯残留

English

Determination of residual toluene diisocyanate in sponge bra by gas chromatography

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

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CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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