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HJ 694-2014

Chinese Standard: 'HJ 694-2014'
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Detail Information of HJ 694-2014; HJ694-2014
Description (Translated English): Environmental Protection
Sector / Industry: Environmental Protection Industry Standard
Classification of Chinese Standard: Z16
Word Count Estimation: 16,187
Date of Issue: 3/13/2014
Date of Implementation: 7/1/2014
Quoted Standard: GB/T 21191; HJ/T 91; HJ/T 164; HJ 493; HJ 494
Drafting Organization: Nanjing Environmental Monitoring Center Station
Administrative Organization: Department of Environmental Protection
Regulation (derived from): Ministry of Environmental Protection Notice No. 17 of 2014
Issuing agency(ies): Ministry of Environmental Protection
Summary: This Standard specifies the Determination of mercury, arsenic, selenium and antimony secret atomic fluorescence spectrometry. This Standard applies to surface water, groundwater measurement, sewage and industrial waste mercury, arsenic, selenium, antimony

HJ 694-2014
HJ
NATIONAL ENVIRONMENTAL PROTECTION STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Water Quality - Determination of Mercury, Arsenic,
Selenium, Bismuth and Antimony –
Atomic Fluorescence Spectrometry
水质 水质 汞, 砷, 硒, 铋和锑的测定
原子荧光法
ISSUED ON. MARCH 13, 2014
IMPLEMENTED ON. JULY 01, 2014
Issued by. Ministry of Environmental Protection
Table of Contents
Announcement ... 3 
Foreword ... 4 
1 Application scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 6 
4 Principle of the method ... 6 
5 Interference and elimination ... 6 
6 Reagents and materials ... 7 
7 Instruments and equipment ... 11 
8 Samples ... 11 
9 Analysis steps ... 12 
10 Result calculation and representation ... 15 
11 Precision and accuracy ... 15 
12 Quality assurance and quality control ... 17 
13 Waste disposal ... 18 
14 Notes ... 18 
Annex A ... 19 
Announcement
2014 No. 17
Ministry of Environmental Protection of the People's Republic of China
To implement the “Environmental Protection Law of the People's Republic of China”,
protect the environment, protect human health, and regulate environmental
monitoring, two standards, including “Water Quality - Determination of Mercury,
Arsenic, Selenium, Bismuth and Antimony - Atomic Fluorescence Spectrometry”, are
approved as national environmental protection standards, and are published.
The standard names and numbers are as follows.
1. “Water Quality - Determination of Mercury, Arsenic, Selenium, Bismuth and
Antimony - Atomic Fluorescence Spectrometry” (HJ 694-2014);
2. “Soil - Determination of organic carbon - Combustion oxidation nondispersive
infrared absorption method” (HJ 695-2014).
Above standards are implemented since July 1, 2014, and are published by China
Environmental Press. The standard content can be inquired at the website of the
Ministry of Environmental Protection (bz.mep.gov.cn).
Notice is hereby given.
Ministry of Environmental Protection
March 13, 2014
Foreword
To implement the “Environmental Protection Law of the People's Republic of China”
and "Water Pollution Prevention Law of the People's Republic of China”, protect the
environment, protect human health, and regulate the monitoring methods of mercury,
arsenic, selenium, antimony, and bismuth in water, this Standard is formulated.
This Standard specifies the atomic fluorescence spectrometry for determination of
mercury, arsenic, selenium, bismuth, and antimony in water.
This Standard is released for the first time.
Annex A of this Standard is informative.
This Standard was formulated by the Department of Science, Technology and
Standards of Ministry of Environment Protection.
Main drafting organization of this Standard. Nanjing Environmental Monitoring Center.
Verification organizations of this Standard. Jiangsu Environment Monitoring Center,
Jiangsu Physical and Chemical Testing Center, Wuxi Environmental Monitoring
Center Station, Changzhou Environmental Monitoring Center, Zhenjiang
Environmental Monitoring Center Station, and Taizhou Environmental Monitoring
Center.
This Standard was approved by the Ministry of Environmental Protection on March 13,
2014.
This Standard shall be implemented from July 1, 2014.
This Standard shall be interpreted by the Ministry of Environmental Protection.
Water Quality - Determination of Mercury, Arsenic,
Selenium, Bismuth and Antimony –
Atomic Fluorescence Spectrometry
Warning. nitric acid, hydrochloric acid, and perchloric acid have a strong
corrosivity and a strong oxidability, so it shall wear protective equipment when
operating, so as to avoid contact with skin and clothing. The pretreatment
process of all samples shall be carried out in a fume hood.
1 Application scope
This Standard specifies the atomic fluorescence spectrometry for the determination of
mercury, arsenic, selenium, bismuth, and antimony in water.
This Standard applies to the determination of soluble [Translator. dissolved-state] and
total quantity of mercury, arsenic, selenium, bismuth, and antimony in surface water,
groundwater, sewage, and industrial waste water.
According to the method of this Standard, the detection limit of mercury is 0.04μg/L,
the determination lower limit of mercury is 0.16μg/L; the detection limit of arsenic is
0.3μg/L, the determination lower limit of arsenic is 1.2μg/L; the detection limit of
selenium is 0.4μg/L, the determination lower limit of selenium is 1.6μg/L; the detection
limit of bismuth and antimony is 0.2μg/L, the determination lower limit of bismuth is
0.8μg/L.
2 Normative references
This Standard references the following documents or its terms. For undated
references, the latest version applies to this Standard.
GB/T 21191 Atomic fluorescence spectrometer
HJ/T 91 Technical specifications requirements for monitoring of surface water
and waste water
HJ/T 164 Technical specifications for environmental monitoring of groundwater
HJ 493 Water quality - Technical regulation of the preservation and handling of
samples
HJ 494 Water quality - Guidance on sampling techniques
Pipette 5.00ml of mercury standard solution (6.21.2) into a 500ml volumetric flask;
add 50ml of hydrochloric acid (6.14); use mercury standard fixative (6.21.1) to dilute to
the mark; mix well. Store in a glass bottle. It can be stored at 4°C for 100 d [Translator.
days].
6.21.4 Mercury standard using solution. ρ(Hg) = 10.0g/L.
Pipette 5.00ml of mercury standard intermediate solution (6.21.3) into a 500ml
volumetric flask; add 50ml of hydrochloric acid (6.14); dilute with water to the mark;
mix well. Store in a glass bottle. Prepare it when it is to be used.
6.22 Arsenic standard solution
6.22.1 Arsenic standard stock solution. ρ(As) = 100mg/L.
Purchase the commercially available certified reference materials; or weigh 0.1320g
of guarantee-reagent arsenic trioxide (6.10) that has been dried at 105°C for 2h;
dissolve in 5ml of 1mol/L sodium hydroxide solution; use 1mol/L hydrochloric acid to
neutralize until phenolphthalein red fades off; transfer into a 1000ml volumetric flask;
dilute with water to the mark; mix well. Store in a glass bottle. It can be stored at 4°C
for 2 years.
6.22.2 Arsenic intermediate standard solution. ρ(As) = 1.00mg/L.
Pipette 5.00ml of arsenic standard stock solution (6.22.1) into a 500ml volumetric
flask; add 100ml of hydrochloric acid (6.14); dilute with water to the mark ; mix well. It
can be stored at 4°C for 1 year.
6.22.3 Arsenic standard using solution. ρ(As) = 100μg/L.
Pipette 10.00ml of arsenic standard intermediate solution (6.22.2) into a 100ml
volumetric flask; add 20ml of hydrochloric acid (6.14); dilute with water to the mark;
mix well. It can be stored at 4°C for 30 d.
6.23 Selenium standard solution
6.23.1 Selenium standard stock solution. ρ(Se) = 100mg/L.
Purchase the commercially available certified reference materials; or weigh 0.1000g
of high-purity selenium powder (6.11) in a 100ml beaker; add 20ml of nitric acid (6.2);
heat at a low temperature to dissolve; cool to room temperature; transfer into a
1000ml volumetric flask; dilute with water to the mark; mix well. Stored in a glass
bottle. It can be stored at 4°C for 2 years.
6.23.2 Selenium standard intermediate solution. ρ(Se) = 1.00mg/L.
Pipette 5.00ml of selenium standard stock solution (6.23.1) into a 500ml volumetric
flask; add 150ml of hydrochloric acid (6.14); dilute with water to the mark; mix well. It
can be stored at 4°C for 100 d.
6.23.3 Selenium standard using solution. ρ(Se) = 10.0μg/L.
Pipette 5.00ml of selenium standard intermediate solution (6.23.2......
Related standard:   HJ 686-2014  HJ 696-2014
   
 
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