HJ 1267-2022 (English Version) PDF

Scope: This standard specifies a high-performance liquid chromatography method for the determination of phenoxycarboxylic acid herbicides and dicamba in water. This standard applies to dicamba (3,6-dichloro-2-methoxybenzoic acid), 2,4-D (2,4-dichlorophenoxylate) in surface water, groundwater, domestic sewage, industrial wastewater and seawater. acetic acid), 2-methyl-4-chloro(2-methyl-4-chlorophenoxyacetic acid), 2,4-D propionic acid (2-(2,4-dichlorophenoxy)-propionic acid), 2,4,5-trichlorophenoxyacetic acid (2,4,5-trichlorophenoxyacetic acid), 2,4-Dbutyric acid (4-(2,4-dichlorophenoxy)-butyric acid) and 2,4-Dbutyric acid , Determination of 7 herbicides including 5-propionic acid (2-(2,4,5-trichlorophenoxy)-propionic acid). Using liquid-liquid extraction, the sampling volume is 250 ml, and when the fixed volume is 1.0 ml, the detection limit of the method is 0.04 μg/L~0.06 μg/L, and the lower limit of determination is 0.16 μg/L~0.24 μg/L; direct purification is used , when the sampling volume is 5.0 ml and the fixed volume is 1.0 ml, the detection limit of the method is 0.5 μg/L~0.8 μg/L, and the lower limit of determination is 2.0 μg/L~3.2 μg/L. See Appendix A for details.

HJ 1267-2022 Referenced Document

GB 17378.3 The specification for marine monitoring.Part3:Sample collection,storage and transportation
HJ 164 Technical Specifications for Groundwater Environmental Monitoring
HJ 442.3 Technical Specifications for Environmental Monitoring of Coastal Sea Areas Part III Water Quality Monitoring of Coastal Sea Areas
HJ 91.1 Sewage Monitoring Technical Specifications
HJ 91.2 Technical specifications for surface water environmental quality monitoring

2022 HJ 1267-2022 Water quality—Determination of 6 phenoxy acid herbicides and dicamba —High performance liquid chromatography