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GB/T 30908-2014: Photography -- Processing wastes -- Determination of boron
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Photography -- Processing wastes -- Determination of boron
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GB/T 30908-2014
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Basic data | Standard ID | GB/T 30908-2014 (GB/T30908-2014) | | Description (Translated English) | Photography -- Processing wastes -- Determination of boron | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G84 | | Classification of International Standard | 37.040.99 | | Word Count Estimation | 11,120 | | Date of Issue | 7/8/2014 | | Date of Implementation | 12/1/2014 | | Quoted Standard | GB/T 20432.1-2006; HJ 493; HJ 494; HJ 495; ISO 6353-1-1982; ISO 6353-2-1983; ISO 6353-3-1987 | | Adopted Standard | ISO 6849-1996, MOD | | Regulation (derived from) | 2014 National Standards Bulletin No. 18 | | 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 two methods for the determination of boron in photographic processing waste. Method A is mannitol borate complex method, mannitol borate complex determination borate (a strongly acidic than boric acid) titration method, the scope o | GB/T 30908-2014: Photography -- Processing wastes -- Determination of boron---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.
Photography.Processing wastes.Determination of boron
ICS 37.040.99
G84
National Standards of People's Republic of China
Determination of photographic processing waste liquid boron
(ISO 6849.1996, MOD)
Issued on. 2014-07-08
2014-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard uses redrafted law revision using ISO 6849.1996 "photographic processing waste liquid boron determination" (in English).
This standard and ISO 6849.1996 and its main technical differences for the following reasons.
--- According to Ministry of Environmental Protection of water quality sampling specifications, sampling and sample preparation for the content made additional modifications. increased
Sampling methods, considerations and sample preservation and so on.
Reference standard literature listed, since most have new versions. either merged or abolished, so this standard to refer to these standards
When using the latest version. Specific changes are as follows.
--- "ISO 385-1. 1984, ISO 385-2. 1984, ISO 385-3. 1984" to "ISO 385.2005".
--- "ISO 648. 1977" to "GB/T 12808-1991".
--- "ISO 835-1. 1981, ISO 835-2. 1981, ISO 835-3. 1981, ISO 835-4. 1981," to "ISO 835.2007".
--- "ISO 1042. 1983" to "GB/T 12806-1991".
--- "ISO 4788. 1980" to "ISO 4788.2005".
--- "ISO 5725-1.1994" to "GB/T 6379.1-2004".
For ease of use, this standard made the following editorial changes.
--- Principle, add 2 Article title. Method 3.1 A, 3.2 Method B;
--- The 8.3.1,8.3.2,8.3.3 letter of each paragraph to read items listed;
--- Delete data Appendix A, reservations by reference.
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 Group Limited.
The main drafters of this standard. Cao Yongli, Bao Limin, Sunchao Xia.
Determination of photographic processing waste liquid boron
1 Scope
This standard specifies two methods for the determination of boron in photographic processing waste.
Method A is mannitol borate complex method, determination of boron mannitol borate complex (a strongly acidic than boric acid) titration method
Salt, the scope of the boron content is higher than 0.1mg/L. In the 0.1mg/L ~ 5mg/L range, with lead acid phosphate precipitate removed.
In 1mg/L ~ 100mg/L range, the sample was diluted 25-fold if the concentration of phosphorus is less than 500mg/L, you can go phosphorus interference.
Method B is methylene blue spectrophotometric method for boron concentration in the range of 0.1mg/L ~ 1.0mg/L.
This standard applies to photographic processing waste liquid analysis of boron emissions.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 20432.1-2006 Photographic grade chemicals - Test methods - Part 1. General (ISO 10349-1.2002,
IDT)
Conservation and management of technical regulations HJ493 water quality samples
HJ494 water sampling technical guidance
Technical regulation for design HJ495 water sampling program
ISO 6353-1. 1982 Reagents for chemical analysis - Part 1. General test methods (Reagentsforchemicalanalysis-
Part 1. Generaltestmethods)
ISO 6353-2. 1983 Reagents for chemical analysis - Part 2. Specification of the first series (Reagentsforchemicalanalysis-
Part 2. Specifications-Firstseries)
ISO 6353-3. 1987 Reagents for chemical analysis - Part 3. Specification of the second series (Reagentsforchemicalanalysis-
Part 3. Specifications-Secondseries)
Principle 3
Principle 3.1 Method A
Mannitol borate complex, sodium acetate pH balance. Sample acidified with sulfuric acid, boil remove carbon dioxide. Cool to
At room temperature, was added sodium hydroxide to adjust the pH to 7. Join mannitol and boric acid complex is formed, a solution of 0.02mol/L sodium hydroxide to pH
7 recall. Titration samples and blanks within the specified time, so that the interference of atmospheric carbon dioxide is minimized. This method does not apply to ammonia
Gas, acetic acid or hydrochloric acid gas vapor present in the case, since these changes may be absorbed by the sample pH.
3.2 Method B
Methylene blue spectrophotometric method, adding sulfuric acid, hydrofluoric acid, forming a tetrafluoroborate ion (BF4-), and then add the methylene blue, with
1,2-dichloroethane extract complex. Measure the absorbance of the extract in the vicinity of a wavelength of 660nm.
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