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GB/T 24792-2009: Processing photographic wastes -- Analysis of cyanides -- Determination of hexacyanoferrate (Ⅱ) and hexacyanoferrate (Ⅲ) by spectrometry
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Processing photographic wastes -- Analysis of cyanides -- Determination of hexacyanoferrate (Ⅱ) and hexacyanoferrate (Ⅲ) by spectrometry
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GB/T 24792-2009
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Basic data | Standard ID | GB/T 24792-2009 (GB/T24792-2009) | | Description (Translated English) | Processing photographic wastes -- Analysis of cyanides -- Determination of hexacyanoferrate (��) and hexacyanoferrate (��) by spectrometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G84 | | Classification of International Standard | 37.040.30 | | Word Count Estimation | 10,170 | | Date of Issue | 2009-12-15 | | Date of Implementation | 2010-06-01 | | Quoted Standard | GB/T 20432.1-2006; ISO 5667-1-2006; ISO 5667-3-2003; ISO 6353-1-1982; ISO 6353-2-1983; ISO 6353-3-1987 | | Adopted Standard | ISO 7766-2003, IDT | | Regulation (derived from) | National Standard Approval Announcement 2009 No.15 (Total No.155) | | 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 determination of photographic processing waste liquid iron salts hexacyanoferrate (��) and hexacyanoferrate acid (��) test methods. | GB/T 24792-2009: Processing photographic wastes -- Analysis of cyanides -- Determination of hexacyanoferrate (Ⅱ) and hexacyanoferrate (Ⅲ) by spectrometry
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Processing photographic wastes.Analysis of cyanides.Determination of hexacyanoferrate (Ⅱ) and hexacyanoferrate (Ⅲ) by spectrometry
ICS 37.040.30
G84
National Standards of People's Republic of China
GB/T 24792-2009/ISO 7766.2003
Photographic processing waste liquid cyanide analysis
By spectrometry hexacyanoferrate ferrocyanide (Ⅱ) and
Hexacyanoferrate salts (Ⅲ)
(ISO 7766.2003, IDT)
Posted 2009-12-15
2010-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard is equivalent to ISO 7766 Implementation.2003 "photographic processing waste liquid cyanide analysis Determination of hexacyanoferrate ferrocyanide
(Ⅱ) and hexacyanoferrate salts (Ⅲ) "(in English).
This standard is equivalent translation ISO 7766.2003.
For ease of use, this standard made the following editorial changes.
a) "this International Standard" be replaced by "this standard";
b) use a decimal point instead of a decimal comma ",". ",";
c) Delete ISO 7766.2003 Foreword instead of the standard "foreword"; the introduction of this standard as a direct translation of the introduction;
d) Since the original standard ISO 7766. Most of the existing standard version of the new 2003 cited in normative references. either merge
Or abolished, so this standard when referring to these standards, using the latest version. Specific changes are as follows.
ISO 5667-1. 1980 Water quality - Sampling - Part 1. Sampling procedures design guidelines
ISO 5667-2.1991 Water quality - Sampling - Part 2. Sampling Techniques Guide (defunct)
ISO 5667-3.1994 Water quality - Sampling - Part 3. preservation and handling of samples guidance
To. ISO 5667-1.2006 Water quality - Sampling - Part 1. Sampling procedures and sampling techniques design guidelines
ISO 5667-3.2003 Water quality - Sampling - Part 3. preservation and handling of water samples Guidelines
The standard proposed by China Petroleum and Chemical Industry Association.
The photosensitive material standard by the National Standardization Technical Committee (SAC/TC102) centralized.
This standard was drafted. China Lucky Film Group Corporation.
Drafters of this standard. Cao Yongli, Baoli Min.
GB/T 24792-2009/ISO 7766.2003
Introduction
This standard is dedicated to analyzing photographic processing waste; it provides for the photographic processing waste liquid discharged from the iron complexed cyanide (hexacyanoferrate
Ferrite) method of analysis.
Some of the chemicals listed in the testing process corrosive, toxic or other hazards. A clear warning, caution and danger Warning
After specified, regardless of any additional chemicals should be standard throughout the implementation of preventive measures requirements.
As for waste emissions, best photographic processing plants to establish rules to be managed by the appropriate chemical analysis. Sometimes the analysis chamber is
It allowed, but usually require sampling and analysis outside the wash plant.
Complexed cyanide present in the usual color photography process bleaching stage, the results of the analysis of the photographic process wastewater discharge
The possibility of the presence of cyanide in the report should reach the level. In sample preparation, the decomposition of cyanide complexes, such a test process
Complexed cyanide forms part of the total cyanide. The purpose of this standard is to hexacyanoferrate salts present in the form of cyanide complexes mention
For a reliable measurement. Since the chemical properties of complexed cyanide, it is impossible to specify a single method to quantitatively measure these waste
Complexed cyanide water.
The following are the different parts of international standards related to the analysis of cyanide.
1984 Water quality Determination of cyanide - Part 1 Measurement of Total Cyanide. ISO 6703-1
Section 21984 of Measurement Quality cyanide easily released cyanide. ISO 6703-2
Note 1. The free cyanide is defined as having a cyanide group, it has a measurable vapor pressure of hydrogen cyanide substance at pH 4 at room temperature.
Note 2. pH 6, the escape of cyanide from the solution to form hydrogen cyanide (HCN) at room temperature, the cyanide-based measurement step of cyanide simple
Compounds and complexes easily dissociated.
GB/T 24792-2009/ISO 7766.2003
Photographic processing waste liquid cyanide analysis
By spectrometry hexacyanoferrate ferrocyanide (Ⅱ) and
Hexacyanoferrate salts (Ⅲ)
1 Scope
This standard specifies the determination photographic processing waste liquid hexacyanoferrate ferrocyanide (Ⅱ) (ferrocyanide [Fe (CN) 6] -4) and hexacyanoferrate
Salt (Ⅲ) (ferricyanide [Fe (CN) 6] -3) test method, then the waste will be discharged in the photographic process called
Fe (CN) 61). Results are reported as hexacyanoferrate salts, Fe (CN) 6.
1) an amount of thiosulfate (sodium thiosulfate pentahydrate) will interfere. Waste water processing machine in a certain amount of lead iron thiosulfate
(Ⅲ) oxidation of thiosulfate. Produce sulfur will increase the measured absorbance. In addition, the thiosulfate may deplete iron added
(Ⅲ) leaving the color of the reaction can not proceed. This method is suitable for the building of waste water discharged sewage thiosulfate remaining buildings will be discharged dilute
Release, thereby eliminating interference thiosulfate.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard. However, according to research encourages the parties to the agreement
Study whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 20432.1-2006 Photographic-grade chemicals - Test methods - Part 1 General (ISO 10349-1.2002,
IDT)
ISO 5667-1.2006 Water quality - Sampling - Part 1 Sampling procedures and sampling techniques design guidelines
ISO 5667-3.2003 Water quality - Sampling - Part 3 water samples preservation and handling guidelines
The first part of the 1982 chemical analysis reagent 1.. ISO 6353-1 General test methods
ISO 6353-2. 1983 Reagents for chemical analysis - Part 2. Specification of the first series
ISO 6353-3. 1987 Reagents for chemical analysis - Part 3. Specification of the second series
3 Safety and Handling Precautions
3.1 hazard warning
Some of the chemicals listed in the testing process corrosive, toxic or hazardous for other reasons. Laboratory safety practices requirements in place
To properly use safety glasses or goggles, rubber gloves and other protective equipment, such as masks and aprons when working processing chemicals. For special
Do not hazardous material in the text and footnotes have been detailed in the risk warnings in the implementation of any chemical operations should always perform a standard
Precaution.
During the test the first time mention a dangerous material in a timely manner, the danger will pass the word "dangerous" and a heel at the rear by comprising a
Letters angle brackets "< >" symbol to indicate the composition. Double parentheses "" "" is used to indicate a particularly dangerous situation. In a subsequent statement contained
Treatment of hazardous substances, but only marked by the danger symbols and letters in parentheses. Furthermore, for a specific material, a
Within chapters danger sign only once.
Hazard warning sign is not used for an amount less than 1L of common organic solvents, unless they have a special risk.
Detail of the disposal of the chemicals and dilution warning sign is not included in the scope of this standard.
Enterprises should be required by law to provide training and health and safety information.
Hazard symbol system used in this standard only provides the user with information, not the law of symbols, it is stipulated that each country
GB/T 24792-2009/ISO 7766.2003
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