title: Simultaneous determination of three chloroacetic acids, three herbicides, and 12 anions in water by ion chromatography.
abstract: An ion chromatography method was developed for the simultaneous detection of three soluble herbicides (glyphosate, bentazone and picloram), three chlorine disinfection byproducts (monochloroacetic acid, dichloroacetic acid and trichloroacetic acid) and 12 anions in water (Cl(-), Br(-), SO4(2-), CO3(2-), ClO3(-), ClO4(-), BrO3(-), PO4(3-), NO2(-), NO3(-), CH3COO(-) and COO(-)). High linearity (r(2) > 0.996) was observed for all target analytes for each respective concentration range. The limit of detection and limit of quantitation were between 0.21-0.85 and 0.06-25.46 μg/L, respectively. However, the interference effect of Cl(-), NO3(-) , SO4 (2-) and CO3(2-) on some target analytes must be considered during the analysis. Sample pre-treatment by a hydrogen column (H-column) required to reduce the negative effect of CO3(2-). Additionally, sample pre-treatment by a sliver-hydrogen column (Ag-H-column) is required when Cl(-) > 100 mg/L and SO4(2-) < 50 mg/L, and pre-treatment by both a barium column (Ba-column) and an H-column is required when Cl(-) > 100 mg/L and SO4(2-) > 50 mg/L. When Cl(-) > 100 mg/L, SO4(2-) > 50 mg/L and CO3(2-) > 20 mg/L, the sample pre-treatment by either an Ag-H-Ba-column or an Ag-H-column and Ba-column is required to minimize interference.
authors.affiliation: School of Marine, China University of Geosciences, Beijing, PR China.
authors.forename: Ximing
authors.initials: X
authors.lastname: Luo
authors.affiliation: State Key Laboratory of Hydraulic Engineering Simulation and Safety, School of Civil Engineering, Tianjin University, Tianjin, PR China.
authors.forename: Liang
authors.initials: L
authors.lastname: Chen
authors.affiliation: School of Marine, China University of Geosciences, Beijing, PR China.
authors.forename: Yanqing
authors.initials: Y
authors.lastname: Zhao
mesh_terms: D000085:Acetates / Q000737:chemistry; D000838:Anions / Q000032:analysis*; D001581:Benzothiadiazines / Q000737:chemistry; D002713:Chlorine / Q000737:chemistry; D062845:Chloroacetates / Q000032:analysis*; D002852:Chromatography, Ion Exchange / Q000379:methods*; D003999:Dichloroacetic Acid / Q000737:chemistry; D005998:Glycine / Q000031:analogs & derivatives / Q000737:chemistry; D006540:Herbicides / Q000032:analysis*; D007477:Ions; D057230:Limit of Detection; D010846:Picloram / Q000737:chemistry; D015203:Reproducibility of Results; D014238:Trichloroacetic Acid / Q000737:chemistry; D014867:Water / Q000737:chemistry*; D000097797:Glyphosate
chemical_list: D000085:Acetates; D000838:Anions; D001581:Benzothiadiazines; D002713:Chlorine; D062845:Chloroacetates; D003999:Dichloroacetic Acid; D005998:Glycine; D006540:Herbicides; D007477:Ions; D010846:Picloram; D014238:Trichloroacetic Acid; D014867:Water; D000097797:Glyphosate; C006972:chloroacetic acid; C002003:bentazone
keywords: Bentazone; Disinfection byproducts; Glyphosate; Picloram