HYT152-2013 English PDF

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HYT152-2013: Speciation of trivalent arsenic and pentavalent arsenic in sea water by atomic fluorescence spectroscopy
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
HY/T 152-2013	259	Add to Cart	3 days	Speciation of trivalent arsenic and pentavalent arsenic in sea water by atomic fluorescence spectroscopy	Valid

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Basic data

Standard ID: HY/T 152-2013 (HY/T152-2013)
Description (Translated English): Speciation of trivalent arsenic and pentavalent arsenic in sea water by atomic fluorescence spectroscopy
Sector / Industry: Marine Industry Standard (Recommended)
Classification of Chinese Standard: Z17
Classification of International Standard: 07.060; 13.060
Word Count Estimation: 10,124
Quoted Standard: GB/T 12806-2011; GB 17378.3;
Regulation (derived from): Seawater; trivalent arsenic; pentavalent arsenic; atomic fluorescence spectrometry; ocean; instrument; industry standard filing Notice 2013 No. 8 (No. 164 overall)
Issuing agency(ies): State Oceanic Administration
Summary: This standard specifies: analysis of seawater trivalent and pentavalent arsenic inorganic forms of arsenic by atomic fluorescence spectrometry reagents and materials, instruments and equipment, sample collection and processing, sample determination, calcu

HYT152-2013: Speciation of trivalent arsenic and pentavalent arsenic in sea water by atomic fluorescence spectroscopy

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Speciation of trivalent arsenic and pentavalent arsenic in sea water by atomic fluorescence spectroscopy ICS 07.060;13.060 Z17 People's Republic of China Marine Industry Standard Speciation analysis of trivalent arsenic and pentavalent arsenic in seawater Atomic fluorescence spectrometry Released on.2013-04-25 2013-05-01 Implementation Issued by the State Oceanic Administration

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by Shanghai Jiaotong University. This standard is under the jurisdiction of the National Marine Standardization Technical Committee (SAC/TC283). Drafting organizations of this standard. Shanghai Jiaotong University, Shanghai Spectrometer Co., Ltd., National Marine Environmental Monitoring Center. The main drafters of this standard. Xu Fang, Ma Yongan, Li Linghui, Bian Jing, Wang Wei, Liu Zhigao, Li Li. Speciation analysis of trivalent arsenic and pentavalent arsenic in seawater Atomic fluorescence spectrometry

1 Scope

This standard specifies reagents, materials, instruments and equipment for the analysis of trivalent arsenic and pentavalent arsenic inorganic forms in seawater by atomic fluorescence spectroscopy. Preparation, sample collection and processing, sample determination, result calculation and quality control. This standard applies to the determination of the inorganic species of trivalent arsenic and pentavalent arsenic in seawater by atomic fluorescence spectrometry.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 12806-2011 Laboratory glassware single mark volumetric flask GB 17378.3 Marine Monitoring Specification Part 3.Sample Collection, Storage and Transportation

3 Principles of the method

3.1 Determination of trivalent arsenic The trivalent arsenic present in the seawater sample is converted into arsine hydrogen gas by potassium borohydride solution, and it is introduced into atomic fluorescence light by argon as the carrier gas The atomizer of the spectrometer is atomized, and the special hollow cathode lamp of arsenic is used as the excitation light source to measure the fluorescence intensity of atomic arsenic to calculate the phase Should be the concentration of trivalent arsenic in the sample. 3.2 Determination of pentavalent arsenic The pentavalent arsenic present in the seawater sample is converted into trivalent arsenic by the thiourea-ascorbic acid mixed pre-reduction reagent, and then converted by potassium borohydride solution It is arsine hydrogen gas, which is introduced into the atomizer of the atomic fluorescence spectrometer through argon as the carrier gas for atomization, and the special hollow cathode of arsenic is used The lamp is used as the excitation light source to measure the fluorescence intensity of total arsenic in the sample (including trivalent arsenic and pentavalent arsenic), and then calculate the concentration of pentavalent arsenic by subtraction.

4 Reagents and materials

Unless otherwise specified, only use reagents confirmed to be analytically pure and secondary deionized water or water of equivalent purity. 4.1 Potassium borohydride (KBH4) 4.2 Potassium hydroxide (KOH) 4.3 Sodium hydroxide (NaOH) 4.4 Concentrated hydrochloric acid (HCl, c=12mol/L) 4.5 Arsenic trioxide (As2O3). dried at 105°C for 2h, and stored in a desiccator. Note. Arsenic trioxide is highly toxic. 4.6 Disodium hydrogen arsenate heptahydrate (Na2HAsO4·7H2O) 4.7 Concentrated nitric acid (HNO3, c=14mol/L) 4.8 Hydrochloric acid (1 19). Take 50mL concentrated hydrochloric acid (4.4) in a volumetric flask and dilute to 1000mL with water. ......

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