NY/T 1121.11-2006 PDF English
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Soil Testing. Part 11: Method for determination of soil total arsenic
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BUY with any currencies (Euro, JPY, GBP, KRW etc.): NY/T 1121.11-2006 Related standards: NY/T 1121.11-2006
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NY/T 1121.11-2006: PDF in English (NYT 1121.11-2006) NY/T 1121.11-2006
NY
AGRICULTURAL INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 13.080.05
B 11
Soil testing -
Part 11. Method for determination of soil total arsenic
ISSUED ON. JULY 10, 2006
IMPLEMENTED ON. OCTOBER 01, 2006
Issued by. Ministry of Agriculture of the People's Republic of China
Table of contents
Foreword ... 3
1 Scope of application ... 5
2 Method summary ... 5
3 Instruments and equipment ... 5
4 Reagents and solutions ... 6
5 Analysis steps ... 7
6 Results calculation ... 7
7 Precision ... 8
8 Considerations ... 8
Foreword
NY/T 1121 Soil testing is a standard series, which include the following parts.
- Part 1. Soil sampling, processing, and reposition;
- Part 2. Method for determination of soil pH;
- Part 3. Method for determination of soil mechanical composition;
- Part 4. Method for determination of soil bulk density;
- Part 5. Method for determination of soil cation exchange capacity in
calcareous soil;
- Part 6. Method for determination of soil organic matter;
- Part 7. Method for determination of available phosphorous in acid soil;
- Part 8. Method for determination of soil available boron;
- Part 9. Method for determination of soil available molybdenum;
- Part 10. Method for determination of soil total hydrargyrum;
- Part 11. Method for determination of soil total arsenic;
- Part 12. Method for determination of soil total chrome;
- Part 13. Method for determination of soil exchangeable calcium and
magnesium;
- Part 14. Method for determination of soil available sulphur;
- Part 15. Method for determination of soil available silicon;
- Part 16. Method for determination of total water-soluble salt;
- Part 17. Method for determination of soil chloride ion content;
- Part 18. Method for determination of soil sulphate content;
...
This part is part 11 of NY/T 1121.
This part was proposed by AND shall be under the jurisdiction of Ministry of
Agriculture of the People's Republic of China.
Soil testing -
Part 11. Method for determination of soil total arsenic
1 Scope of application
This part applies to the measurement of total arsenic of all kinds of soils.
2 Method summary
Arsenic acid solution, in the hydride generator, is subjected to hydrogenation
reaction with the reducing agent potassium borohydride, forming the arsenic
hydride gas. USE argon as the carrier gas to lead the arsenic hydride gas into
the quartz furnace for atomization, AND the heated arsenic hydride is
dissociated into arsenic gas atoms. Arsenic atoms are excited under the light
source characteristic radiation to produce atomic fluorescence, which reaches
to the detector and is converted into electrical signals; after being amplified by
the electronic amplifier, USE the reading device to read out the results. The
fluorescence intensity produced is proportional to the measured element
content in the sample, AND the content of the measured element can be found
from the calibration curve.
Most of the elements in the soil after decomposition can also enter the test
solution, AND Cu2+, Co2+, Ni2+, Cr6+, Au3+, Hg2+ will interfere with the
measurement, which can be eliminated by adding thiourea.
The detection limit was 0.4 μg/L.
3 Instruments and equipment
3.1 Atomic fluorescence spectrometer
3.2 Arsenic double cathode hollow cathode lamp
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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