GB/T 5009.172-2003 in English

《GB/T 5009.172-2003大豆、花生、豆油、花生油中的氟乐灵残留量的测定》由361（国家卫生健康委员会）归口，主管部门为国家卫生健康委员会。
本标准规定了大豆、花生、豆油、花生油中氟乐灵残留量的测定方法。本标准适用于大豆、花生、豆油、花生油中氟乐灵残留量的测定。本方法的检出限为0.001ng。钱性范围：0.01μg/mL～0.10μg/mL。

1 Scope

This standard specifies determination methods of trifluralin residues in soybean, peanut, soybean oil and peanut oil.
This standard is applicable to the determination of trifluralin residues in soybean, peanut, soybean oil and peanut oil.
The detection limit of this method is 0.001μg and the linear range is 0.01μg/mL~0.10μg/mL.

2 Principle

After the trifluralin in specimen is extracted with methanol or acetone, it undergoes liquid-liquid split and Florisil column purification; then it is determined by gas chromatograph with electron capture detector and quantify with external standard method.

3 Reagents

3.1 Methanol: redistill with all-glass distiller.
3.2 Acetone: redistill with all-glass distiller.

Foreword j
Introduction i
1 Scope 1
2 Principle 1
3 Solvent 1
4 Apparatus and Equipment 2
5 Analysis Procedures 2
6 Precision 4
7 Chromatogram 4