Search result: GB/T 21925-2008
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Determination of herbicide residues in water -- LC/MS method
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GB/T 21925-2008
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| Standard ID | GB/T 21925-2008 (GB/T21925-2008) | | Description (Translated English) | Determination of herbicide residues in water. LC/MS method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Z16 | | Classification of International Standard | 13.060.50 | | Word Count Estimation | 10,135 | | Date of Issue | 2008-05-16 | | Date of Implementation | 2008-11-01 | | Quoted Standard | GB/T 12998; GB/T 12999 | | Drafting Organization | National agro processing Food Quality Supervision and Inspection Center | | Administrative Organization | China National Standardization Management Committee | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 9, 2008 (No. 122 overall) | | Proposing organization | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | | Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | | Summary | This standard specifies the water triazine herbicides atrazine, simazine, prometryn and Chlortoluron phenylurea herbicides, herbicide isoproturon residues such as liquid chromatography/mass spectrometry. This standard applies to irrigation water, surface water, groundwater and other water triazines and phenylurea herbicide residues. The detection limit of this standard: prometryne was 0. 05��g/L, atrazine, simazine, Chlortoluron, isoproturon was 0. 25��g/L. |
GB/T 21925-2008
Determination of herbicide residues in water. LC/MS method
ICS 13.060.50
Z16
National Standards of People's Republic of China
Determination of herbicide residues in water
Liquid Chromatography/Mass Spectrometry
Posted 2008-05-16
2008-11-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Preface Ⅰ
1 Scope 1
2 Normative references 1
3 Principle 1
4 Reagents and materials 1
5. Apparatus 1
6 is recommended to use the instrument for 2
7 Procedure 2
8 3 Calculation Results
9 Precision 3
Appendix A (informative) Five Kinds of Herbicide Standards LC/MS total ion chromatogram 4
Annex B (informative) Five Kinds of Herbicide standard substance spectrum 5
Foreword
The Standard Appendix A, Appendix B is an informative annex.
This standard by the State Administration of Quality Supervision Inspection and Quarantine of People's Republic of China, China National Standardization Management Commission.
This standard by the Standardization Administration of China.
This standard was drafted. National Agricultural Processed Food Quality Supervision and Inspection Center, Anhui national agricultural standardization and monitoring center.
The main drafters of this standard. Jiang Toshiki, Nie Lei Shaodong Liang, Liu Tiebing, Caixia, Xia Yi, Tao shipped.
Determination of herbicide residues in water
Liquid Chromatography/Mass Spectrometry
1 Scope
This standard specifies the water triazine herbicides atrazine, simazine, Prometryne and phenylurea herbicide chlorotoluron, isoproturon herbicides
Residues of liquid chromatography/mass spectrometry.
This standard applies to the determination of irrigation water, surface water, ground water and other triazines and phenyl urea herbicide residues.
The detection limit of this standard. Prometryne was 0.05μg/L, atrazine, simazine, chlorotoluron, isoproturon was 0.25μg/L.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 12998 Quality Guidance on sampling techniques
Conservation and management of technical requirements GB/T 12999 Water Sampling sample
Principle 3
Water triazine herbicides atrazine, simazine, Prometryne and phenylurea herbicide chlorotoluron, isoproturon, etc., by liquid-liquid extraction, concentration
Or SPE solid phase extraction cartridge, purification, elution, online quantitative analysis by liquid chromatography/mass spectrometry (LC/MS).
4 Reagents and materials
Unless otherwise indicated, the reagents used were of analytical grade, ultra-pure water for the second distillation.
4.1 Methanol. chromatographically pure.
4.2 acetonitrile. chromatography.
4.3 acetone. chromatography.
4.4 dichloromethane.
4.5 formic acid (85%).
4.6 Solvent microfiltration membrane (aqueous), pore size 0.45μm.
4.7 Standard sample. atrazine, simazine, Prometryne, chlorotoluron, isoproturon (concentration 100μg/mL).
4.8 Standard solution. preparation of standard samples with acetonitrile as the standard stock solution, diluted stock standard solution as a single ingredient concentration 5μg/L ~
500μg/L mixed standard solution series (mixed standard solution in the dark at 4 ℃, you can use a month now with the current recommendation).
5. Apparatus
5.1 liquid chromatography/mass spectrometry (LC/MSD), the ion source is atmospheric pressure electrospray ionization (API-ESI).
5.2 Columns. SB-C18100mm × 3.0mm × 3.5μm or equivalent polar column.
5.3 Solid phase extraction column. SDB500mg/3mL or SDBC18 (1000mg/6mL) or equivalent person.
5.4 rotary evaporator.
5.5 meter dry nitrogen.
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