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GB/T 17418.3-2010: Methods for analysis of noble metals in geochemical samples -- Part 3: Determination of palladium content -- Preconcentration by thiourea-graphite furnace atomic absorption spectrophotometric method
Status: Valid GB/T 17418.3: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 17418.3-2010 | English | 189 |
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Methods for analysis of noble metals in geochemical samples -- Part 3: Determination of palladium content -- Preconcentration by thiourea-graphite furnace atomic absorption spectrophotometric method
| Valid |
GB/T 17418.3-2010
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| GB/T 17418.3-1998 | English | 239 |
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Methods for analysis of noble metals in geochemical samples--Determination of palladium content-Preconcentration by thiourea-Graphite furnace atomic absorption spectrophotometric method
| Obsolete |
GB/T 17418.3-1998
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PDF similar to GB/T 17418.3-2010
Basic data | Standard ID | GB/T 17418.3-2010 (GB/T17418.3-2010) | | Description (Translated English) | Methods for analysis of noble metals in geochemical samples -- Part 3: Determination of palladium content -- Preconcentration by thiourea-graphite furnace atomic absorption spectrophotometric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D46 | | Classification of International Standard | 73.060 | | Word Count Estimation | 8,854 | | Date of Issue | 2010-11-10 | | Date of Implementation | 2011-02-01 | | Older Standard (superseded by this standard) | GB/T 17418.3-1998 | | Quoted Standard | GB/T 17418.1 | | Regulation (derived from) | National Standard Approval Announcement 2010 No.8 (Total No.163) | | 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 | | Summary | This standard specifies the method for the determination of palladium. CAUTION: Using this standard laboratory personnel should experience regular work, this standard does not indicate that all possible security problems users have a responsibility to take appropriate safety and health practices to ensure compliance with the conditions well and regulations of the countries concerned. This section applies to the determination of palladium in geological materials from the mafic rocks containing platinum group elements. Measuring range: the mass fraction expressed 1ng/g ~ 0. 5��g/g. | GB/T 17418.3-2010: Methods for analysis of noble metals in geochemical samples -- Part 3: Determination of palladium content -- Preconcentration by thiourea-graphite furnace atomic absorption spectrophotometric 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 analysis of noble metals in geochemical samples Part 3. Determination of palladium content Preconcentration by thiourea-graphite furnace atomic absorption spectrophotometric method
ICS 73.060
D46
National Standards of People's Republic of China
Replacing GB/T 17418.3-1998
Analysis of noble metals in geochemical samples
Part 3. Determination of the amount of palladium
Thiourea enrichment - graphite furnace atomic absorption spectrophotometry
Part 3. Determinationofpaladiumcontent-
Issued on. 2010-11-10 2011-02-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 17418 "analysis of noble metals in geochemical samples Method" is divided into seven parts.
--- Part 1. General rules and regulations;
--- Part 2. platinum and rhodium content - Determination of thiourea enrichment - catalytic polarography;
--- Part 3. Determination of palladium content - Preconcentration by thiourea - Graphite furnace atomic absorption spectrophotometry;
--- Part 4. Determination of the amount of iridium-enriched thiourea - Catalytic spectrophotometry;
--- Part 5. Determination of the amount of ruthenium and osmium distillation - Catalytic spectrophotometry;
--- Part 6. platinum, palladium and gold contents - fire assay enrichment - Emission Spectrometry;
--- Part 7. Determination of nickel sulphide fire assay gold platinum group elements - Inductively Coupled Plasma Mass Spectrometry.
This section GB/T 17418 Part 3.
This Part replaces GB/T 17418.3-1998 "analysis of noble metals in geochemical samples enriched thiourea - Graphite Furnace Atomic Absorption
Determination of the amount of palladium. "
This section compared with the GB/T 17418.3-1998, the main changes are as follows.
--- Increased warning;
--- Clearly indicate the mass fraction measurement range;
--- Specification standard noun;
--- Modify supplements the results of the calculation;
--- Modify simplifies sample scale test solution dispensing scale content;
--- Change some sequence of reagents and samples sulfide bake conditions;
--- Remove the instrument detection limit of the instrument, calibration curve and precision requirements;
--- Remove Appendix A.
This section presents the People's Republic of China Ministry of Land Resources.
This part of the National Standardization Technical Committee under the jurisdiction of Land and Resources.
This section is responsible for drafting. National geology test center.
This section is drafted. Zhejiang Institute of Geology and Mineral Resources.
The main drafters of this section. Zheng deposit Jiang Hu Yongping, Zhang Qiufang.
This part of the standard replaces the previous editions are.
--- GB/T 17418.3-1998.
Analysis of noble metals in geochemical samples
Part 3. Determination of the amount of palladium
Thiourea enrichment - graphite furnace atomic absorption spectrophotometry
Warning --- Use this section shall be a person experiences regular laboratory work. This section does not point out all possible security asked
question. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.
1 Scope
GB/T 17418 provisions of this part of the determination of palladium in geochemical samples.
This section applies to the determination of palladium in geological materials containing platinum group elements ultrabasic rocks. Measurement range, mass fraction, said.
1ng/g ~ 0.5μg/g.
2 Normative references
The following documents contain provisions which, through reference GB/T 17418 in this section constitute provisions of this section. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this
section.
GB/T 17418.1 precious metal analysis methods General rules and regulations in geochemical samples
Principle 3
In addition to burning through the sample after sulfur and organic matter, sodium peroxide decomposition, water extraction to sulfuric acid, hydrofluoric acid plus evaporation smoke except silicon. Concentrated
Sulfuric acid medium, when heated to 230 ℃, thiourea and platinum, palladium, rhodium, iridium and other precious metal elements generate sulfide precipitation, and thus a large number of base metals division
from. Plus nitric acid - sulfuric acid to dissolve and destroy the filter paper and precipitate sulfur. Then lithium sulfate - sodium pyrosulfate melt, platinum, palladium and other platinum group elements into
Sulfate complex.
Chelate palladium 6mol/L HCl medium and DDO form available petroleum ether - chloroform extraction, palladium is further enriched. organic
Phase palladium graphite furnace atomic absorption spectrometry.
4 Reagents
4.1 hydrochloride (ρ1.19g/mL).
4.2 hydrochloride (11).
Nitrate 4.3 (ρ1.42g/mL).
4.4 sulfate (ρ1.84g/mL).
4.5 sulfate (11). Warning --- improper dilution risk prone.
4.6 Hydrofluoric acid (ρ1.15g/mL). Warning --- toxic and corrosive hydrofluoric acid, care.
4.7 phosphoric acid (ρ1.69g/mL).
4.8 perchloric acid (ρ1.67g/mL). Pure class distinctions. Warning --- explosive, careful operation.
4.9 sodium peroxide.
4.10 hydrogen peroxide (ρ1.11g/mL).
4.11 sodium chloride solution w (NaCl) = 20%.
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