|
US$179.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 7739.12-2016: Methods for chemical analysis of gold concentrates -- Part 12: Determination of arsenic, mercury, cadmium, lead and bismuth contents -- Atomic fluorescence spectrometric method
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 7739.12-2016 | English | 179 |
Add to Cart
|
3 days [Need to translate]
|
Methods for chemical analysis of gold concentrates -- Part 12: Determination of arsenic, mercury, cadmium, lead and bismuth contents -- Atomic fluorescence spectrometric method
| Valid |
GB/T 7739.12-2016
|
PDF similar to GB/T 7739.12-2016
Basic data | Standard ID | GB/T 7739.12-2016 (GB/T7739.12-2016) | | Description (Translated English) | Methods for chemical analysis of gold concentrates -- Part 12: Determination of arsenic, mercury, cadmium, lead and bismuth contents -- Atomic fluorescence spectrometric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D46 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 9,941 | | Date of Issue | 2016-08-29 | | Date of Implementation | 2017-07-01 | | Regulation (derived from) | National Standard Announcement 2016 No.14 | | 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 7739.12-2016: Methods for chemical analysis of gold concentrates -- Part 12: Determination of arsenic, mercury, cadmium, lead and bismuth contents -- Atomic fluorescence spectrometric method
---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.
Methods for chemical analysis of gold concerntrates - Part 12. Determination of arsenic, mercury, cadmium, lead and bismuth contents - Atomic fluorescence spectrometric method
ICS 77.120.99
D46
National Standards of People's Republic of China
Gold chemical analysis method
Part 12. determination of arsenic, mercury, cadmium, lead and bismuth
Atomic fluorescence spectrometry
Part 12. Determination ofarsenic, mercury, cadmium, leadandbismuthcontents-
2016-08-29 released
2017-07-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
GB/T 7739 "gold concentrate chemical analysis method" is divided into 12 parts.
Part 1. Determination of gold and silver;
- Part 2. Determination of silver;
Part 3. Determination of arsenic content;
- Part 4. Determination of copper content;
- Part 5. Determination of lead content;
- Part 6. Determination of zinc content;
- Part 7. Determination of iron content;
- Part 8. Determination of sulfur content;
- Part 9. Determination of carbon content;
- Part 10. Determination of antimony content;
- Part 11. Determination of arsenic and bismuth;
- Part 12. Determination of arsenic, mercury, cadmium, lead and bismuth - Atomic fluorescence spectrometric method.
This part is part 12 of GB/T 7739.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part of the National Gold Standardization Technical Committee (SAC/TC379) proposed and centralized.
This part is responsible for drafting units. Changchun Gold Research Institute.
This part participates in the drafting unit. Beijing Mining and Metallurgy Research Institute, Zijin Mining Group Co., Ltd., Lingbao Gold Co., Ltd.
Dongguo Da Gold Co., Ltd., Lingbao Jinyuan Mining Co., Ltd.
This part of the main drafters. Chen Yonghong, Wang Ju, Su Guangdong, Yan Kai, Chen Diangeng, Tang Shufang, Kuai Lijun, Guo Zhijuan, Chen Zhuhai, Zhu Yansheng,
Kong Lingjiang, Wang Qingli.
Gold chemical analysis method
Part 12. determination of arsenic, mercury, cadmium, lead and bismuth
Atomic fluorescence spectrometry
1 Scope
This part of GB/T 7739 specifies the determination of arsenic, mercury, cadmium, lead and bismuth in gold concentrates.
This part applies to the determination of arsenic, mercury, cadmium, lead and bismuth in gold concentrates. Measuring range. 0.00004% ~ 0.20%.
2 method summary
The sample was dissolved in a water bath with hydrochloric acid and nitric acid or dissolved in hydrochloric acid, nitric acid, perchloric acid and hydrofluoric acid. The As (Ⅴ) in the test solution was treated with a reducing agent,
(Ⅲ), Cd (Ⅳ) is prereduced to Cd (Ⅱ), lead, mercury and bismuth are not pre-reduced, masking agent is used to mask the interfering elements in the test solution.
A certain acidity, the test solution and potassium borohydride solution through the hydride generator to produce hydride, with the carrier gas into the quartz tube atomization, atomic fluorescence
The fluorescence intensity was measured on a light spectrometer and the arsenic, mercury, cadmium, lead and bismuth were calculated according to the standard curve method.
3 reagent
Unless otherwise stated, only reagents and secondary deionized water identified as analytical pure were used in the analysis.
3.1 hydrochloric acid (ρ1.19g/mL), excellent grade pure.
3.2 nitric acid (ρ1.42g/mL), excellent grade pure.
3.3 hydrofluoric acid (ρ1.18g/mL), excellent grade pure.
3.4 perchloric acid (ρ1.76g/mL), excellent grade pure.
3.5 sulfuric acid (ρ1.84g/mL), excellent grade pure.
3.6 Hydrochloric acid (1 1). diluted with hydrochloric acid (3.1).
3.7 Hydrochloric acid (1 19). diluted with hydrochloric acid (3.1).
3.8 Hydrochloric acid (1 49). diluted with hydrochloric acid (3.1).
3.9 nitric acid (14). diluted with nitric acid (3.2).
3.10 Sulfuric acid (1 4). diluted with sulfuric acid (3.5).
3.11 mixed acid (1 3 4). 1 volume nitric acid (3.2), 3 volumes of hydrochloric acid (3.1) and 4 volumes of water mixed evenly, is now available.
3.12 Sodium hydroxide (5 g/L).
3.13 Sodium hydroxide (200 g/L).
3.14 potassium borohydride solution Ⅰ (20g/L). Weigh 10.0g potassium borohydride dissolved in 500mL sodium hydroxide solution (3.12), is now available.
3.15 Potassium borohydride solution II (20g/L). Weigh 10.0g potassium borohydride in 500mL sodium hydroxide solution (3.12), add 5g
Potassium ferricyanide, dissolved, is now available.
3.16 thiourea - ascorbic acid solution (100 g/L).
3.17 oxalic acid (80g/L).
3.18 Cobalt chloride hexahydrate solution (0.5g/L).
3.19 Sodium pyrophosphate (20 g/L).
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 7739.12-2016_English be delivered?Answer: Upon your order, we will start to translate GB/T 7739.12-2016_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 7739.12-2016_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 7739.12-2016_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.
|