Mass fraction of these compounds was determined by GC/atomic emission detection (AED) through C channel (496 nm) with n -eicosane as internal standard.

• 以正二十烷为内标物利用气相色谱 /原子发射光谱 (GC/AED)碳元素 (496nm )检测通道 ,直接得到氯代邻羟基二苯醚类化合物中碳元素的质量 ,再根据分子式对组分定量。