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GB/T 33086-2016: Water treatment chemical -- Determination of arsenic and mercury -- Atomic fluorescence spectrometry
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| GB/T 33086-2016 | English | 119 |
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Water treatment chemical -- Determination of arsenic and mercury -- Atomic fluorescence spectrometry
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GB/T 33086-2016
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Basic data | Standard ID | GB/T 33086-2016 (GB/T33086-2016) | | Description (Translated English) | Water treatment chemical -- Determination of arsenic and mercury -- Atomic fluorescence spectrometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G76 | | Classification of International Standard | 13.060.50��71.040.40 | | Word Count Estimation | 6,677 | | Date of Issue | 2016-10-13 | | Date of Implementation | 2017-05-01 | | Regulation (derived from) | National Standard Notice No.1716 of 2016 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 33086-2016: Water treatment chemical -- Determination of arsenic and mercury -- Atomic fluorescence spectrometry
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Water treatment chemical - Determination of arsenic and mercury - Atomic fluorescence spectrometry
ICS 13.060.50; 71.040.40
G76
National Standards of People's Republic of China
Determination of Arsenic and Mercury in Water Treatment Agents
Atomic fluorescence spectrometry
Watertreatmentchemical-Determination ofarsenicandmercury-
2016-10-13 released
2017-05-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by the China Petroleum and Chemical Industry Association.
This standard is under the jurisdiction of the National Chemical Standardization Technical Committee Water Treatment Substances Technical Committee (SAC/TC63/SC5).
The standard drafting unit. water source (Shanghai) Environmental Protection Technology Co., Ltd., CNOOC Tianjin Chemical Research and Design Institute Co., Ltd., Guangzhou special
Kind of pressure equipment testing and research institute, Shenzhen prospective testing Co., Ltd., Shenzhen City in the water industry technology Development Co., Ltd., Jiashan Channel water
Ling Chemical Co., Ltd., Beijing Hai Guang Instrument Co., Ltd., Zhejiang Shuixin sound detection Limited.
The main drafters of this standard. Li Cui'e, Bai Ying, Du Yuhui, Zheng Yajie, Li Runsheng, Shen Liexiang, Li Lin, Yu Fen, Jiao Yu, Liu Haitao,
Chen Shuang
Determination of Arsenic and Mercury in Water Treatment Agents
Atomic fluorescence spectrometry
WARNING - The strong acids and bases used in this standard are corrosive and should be avoided when inhaled or in contact with the skin. Splash on the body should be used immediately
Wash a lot of water, serious should immediately seek medical attention.
1 Scope
This standard specifies the determination of arsenic and mercury in water treatment agents by atomic fluorescence spectrometry.
This standard is applicable to the detection of arsenic and mercury in water treatment agents using atomic fluorescence spectrometry.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 602 Preparation of standard solutions for the determination of impurities in chemical reagents
GB/T 6682 Analytical laboratory water specifications and test methods
3 General rules
The reagents used in this standard, unless otherwise specified, use analytical reagents and secondary water as specified in GB/T 6682.
The standard solution for the determination of impurities required in the test shall be prepared in accordance with the provisions of GB/T 602 when no other requirements are specified.
Determination of arsenic content
4.1 Method Summary
After the sample was digested with acid, thiourea was added to reduce the pentavalent arsenic to trivalent arsenic, and further adding boron hydride to further reduction
Arsenic, decomposed into atomic arsenic by argon into the quartz atomizer, produces atomic fluorescence under the excitation of the arsenic hollow cathode lamp,
The fluorescence intensity in the fixed conditions and the measured solution is proportional to the concentration of arsenic, which measured the arsenic content of the sample.
4.2 Reagents and materials
4.2.1 hydrochloric acid (excellent grade pure).
4.2.2 nitric acid (excellent grade pure).
4.2.3 Hydrochloric acid solution. 1 19.
4.2.4 Nitric acid solution. 1 4.
4.2.5 Thiourea solution. 100 g/L.
4.2.6 Potassium borohydride - sodium hydroxide solution. Weigh 2.0 g of sodium hydroxide and 10.0 g of potassium borohydride in a polyethylene beaker, dissolved with water and
Diluted to 1000mL, stored in a brown bottle, the solution is now with the distribution.
4.2.7 arsenic standard stock solution. 0.1mg/mL.
4.2.8 Arsenic standard solution. Remove 10.00mL arsenic standard stock solution in 100mL volumetric flask, add 10.0mL hydrochloric acid, diluted with water
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