GB 22606-2008Atrazine technical (English PDF)

Foreword

The standard Chapter 3, Chapter 5 is mandatory, the rest are recommended.

Appendix A of this standard is the data appendix.

Since the implementation of this standard, the original industry standard HG2216-1991 "atrazine original drug" void.

The standard proposed by China Petroleum and Chemical Industry Association.

This standard by the National Standardization Technical Committee on Pesticides (SAC/TC133) centralized.

1 Scope

This standard specifies requirements for atrazine original drug, test methods and marking, labeling, packaging, storage and transportation.

This standard applies to atrazine by the impurity generated in the production and composition of atrazine original drug.

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 1604 Goods pesticide regulations for acceptance GB/T 1605-2001 Sampling Method commercial pesticides GB 3796 pesticide packaging General GB/T 19138 Determination of acetone insoluble pesticide

3 Requirements

3.1 Appearance. white to pale yellow solid.

3.2 atrazine original drug should be consistent with the requirements in Table 1.

Table 1 Atrazine original drug control project indicators

Item Index

Atrazine mass fraction /% >= 95.0 Drying loss mass fraction /% <= 0.8 Dimethylformamide insoluble matter mass fraction a /% <= 0.5 a dimethylformamide insolubles content under normal production conditions, every 3 months test at least once.

Test Method 4

5 Marking, labeling, packaging, storage and transportation

Flag 5.1 atrazine original drug, labeling and packaging should comply with the provisions of GB 3796.

5.2 atrazine original drug application of clean, lined with plastic woven bag, net weight 25kg.

5.3 According to user requirements or ordering agreement, you can use other forms of packaging, it should comply with the provisions of GB 3796.

5.4 The package should be stored in well-ventilated, dry coffers.

5.5 storage, prevent moisture and sunlight, no food, seed, feed mix, avoid contact with skin, eyes, mouth and nose to prevent inhalation.

5.6 security. low toxicity herbicide atrazine. The FDA should wear protective gloves. Nose and mouth to prevent inhalation, or skin contact with exposed parts of the body the goods should be promptly washed with soap and water. In case of poisoning should promptly consult a doctor.

5.7 of acceptance. Acceptance of atrazine original drug for a month. From the date of delivery, the quality of the finished product acceptance within one month, the indicators shall comply with the requirements of this standard.

Appendix A

(Informative)

Atrazine quality gas chromatographic method scores packed column A. 1 Method summary Sample was dissolved in chloroform to triadimefon as internal standard, using polyethylene glycol 20M/GasChromQ packed column and flame Ionization detector to sample atrazine gas chromatographic separation and determination.

A. 2 Reagents and solutions Chloroform;

Triadimefon. >=95%, should not interfere with the analysis of impurities;

Atrazine Sample. Known atrazine content, >=99.0%;

Internal standard solution. Weigh 10.0g of triadimefon, placed 1000mL volumetric flask with chloroform to dissolve and dilute to volume, shake.

A. 3 Instrument

Gas chromatograph. with a hydrogen flame ionization detector;

Chromatographic data processor or chromatography workstation;

Column. 3% polyethylene glycol 20M/GasChromQ (80 mesh to 100 mesh) stainless steel column (column or glass);

Micro injector. 10µL.

A. 4 GC operating conditions Temperature (°C). Column temperature 200 ± 5, the gasification chamber 230, the detector chamber 230;

Gas flow rate (mL/min). carrier gas (N2) 80.0, the hydrogen gas 40, air 400;

Injection volume (µL). 1.0;

Retention time (min). atrazine about 4.6, about 7.4 internal standard.

GC operating conditions described above, the Department of typical operating parameters. According to the characteristics of different instruments, given operating parameters adjusted as appropriate, in order to obtain the best results. Typical atrazine original drug and the internal standard packed column gas chromatography is shown in Figure A. 1.

1 --- atrazine;

2 --- internal standard (triadimefon).

Figure A. 1 atrazine original drug and the internal standard packed column gas chromatogram

A. 5 measuring step

A. 5.1 preparation of standard solution Weigh atrazine standard 0.1g (accurate to 0.0002g), placed in 15mL stoppered glass bottle with a pipette accurately transferred to 10mL Internal standard solution, and shake.

A. 5.2 Sample preparation solution Weigh about containing herbicide atrazine 0.1g sample of (accurate to 0.0002g), placed in 15mL stoppered glass vial, with A. 5.1 used with a pipette accurately transferred to the internal standard solution 10mL, shake.

A. 5.3 Determination Under these operating conditions, the instrument until a stable baseline, the number of continuous injection doses of the standard solution, calculated for each needle atrazine and the internal standard peak area when the ratio of repeatability, two needles herbicide atrazine to be adjacent to the internal standard peak area ratio of the relative change of less than 1.5%, according to the standard solution, sample Solution, sample solution, the order of the standard solution was measured.

A. 6 Calculation

The peak area of the two-pin and the sample solution is measured before and after the two doses of the standard sample solution atrazine and internal standard ratios are averaged.

Atrazine sample mass fraction of 1 (%) according to equation (A.1) Calculated.

Where.

--- Atrazine standard mass fraction, expressed as a percentage.

A. 7 allowable difference the difference between two parallel determination results shall not be greater than 1.5%, the arithmetic mean value as a measurement result.