GB/T 5009.116-2003 PDF English
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| GB/T 5009.116-2003 | English | 70 |
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Determination of oxytetracyline, tetracyline and chlortetracycline residues in meat (HPLC)
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GB/T 5009.116-2003: Determination of oxytetracyline, tetracyline and chlortetracycline residues in meat (HPLC)
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT5009.116-2003
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 67.040
C 53
Determination of oxytetracyline, tetracyline and
chlortetracycline residues in meat (HPLC)
Issued on: AUGUST 11, 2003
Implemented on: JANUARY 1, 2004
Issued by. Ministry of Health of the People’s Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Principle ... 4
3 Reagents ... 4
4 Instrument ... 5
5 Chromatographic conditions ... 5
6 Analysis procedure ... 5
7 Precision ... 6
Foreword
This Standard replaces GB/T 14931.1-1994 “Method for determination of
oxytetracyline, tetracyline and chlortetracycline residues in meat (HPLC)”.
Compared to GB/T 14931.1-1994, the main changes of this Standard are as follows.
- MODIFY the Chinese name of the standard; the Chinese name of the standard is
changed to “Determination of oxytetracyline, tetracyline and chlortetracycline
residues in meat (HPLC)”;
- MODIFY the structure of the original standard according to GB/T 20001.4-2001
“Rules for drafting standards - Part 4. Methods of chemical analysis”.
This Standard is proposed by and under the jurisdiction of Ministry of Health of the
People’s Republic of China.
Drafting organizations of this Standard. Liaoning Food Sanitation Supervision and
Inspection Institute, Dalian Institute of Health Inspection, Shenyang Health and
Epidemic Prevention Station, Liaoning Health Medical College.
Main drafters of this Standard. Huo Yongxin, Yan Yong, Wei Feng, Wu Bolu, Ma Yong.
The original standard was first published in 1994, this is the first revision.
Determination of oxytetracyline, tetracyline and
chlortetracycline residues in meat (HPLC)
1 Scope
This Standard specifies the determination method of oxytetracyline, tetracyline and
chlortetracycline residues in meat.
This Standard applies to the determination of oxytetracyline, tetracyline and
chlortetracycline residues in all kinds of livestock and poultry meat.
In this Standard, the detection limit is 0.15 mg/kg for oxytetracycline, 0.20 mg/kg for
tetracyline and 0.65 mg/kg for chlortetracycline.
2 Principle
After being extracted and filtered through the microporous membrane, the sample is
directly injected, separated by reversed-phase chromatography, detected by UV
detector and compared with the standard; the appearance order of the peak is
oxytetracyline, tetracyline and chlortetracycline. QUANTIFY by standard addition
method.
3 Reagents
3.1 Acetonitrile (analytical reagent).
3.2 0.01 mol/L uranium dihydrogen phosphate solution. WEIGH 1.56 g (accurate to ±
0.01 g) of sodium dihydrogen phosphate (NaH2PH4 • 2H2O); DISSOLVE in distilled
water to 100 mL; FILTER through a microporous membrane (0.45 μm) for further use.
3.3 Oxytetracyline (OTC) standard solution. WEIGH 0.0100 g (accurate to ± 0.0001 g)
of oxytetracyline; DISSOLVE with 0.1 mol/L hydrochloric acid solution to 10.00 mL; the
solution contains 1 mg of oxytetracyline per milliliter.
3.4 Tetracyline (TC) standard solution. WEIGH 0.0100 g (accurate to ± 0.001 g) of
tetracyline; DISSOLVE with 0.01 mol/L hydrochloric acid solution to 10.00 mL; the
solution contains 1 mg of tetracyline per milliliter.
3.5 Chlortetracycline (CTC) standard solution. WEIGH 0.0100 g (accurate to ± 0.0001
g) of chlortetracycline; DISSOLVE in distilled water to 10.00 mL; the solution contains
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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