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GB/T 34322-2017: Automatic continuous determination of water quality for boiler and cooling system -- Potentiometric titration
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 34322-2017 | English | 279 |
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Automatic continuous determination of water quality for boiler and cooling system -- Potentiometric titration
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GB/T 34322-2017
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Basic data | Standard ID | GB/T 34322-2017 (GB/T34322-2017) | | Description (Translated English) | Automatic continuous determination of water quality for boiler and cooling system -- Potentiometric titration | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G76 | | Word Count Estimation | 14,149 | | Date of Issue | 2017-09-07 | | Date of Implementation | 2018-04-01 | | 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 34322-2017: Automatic continuous determination of water quality for boiler and cooling system -- Potentiometric titration
---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.
Automatic continuous determination of water quality for boiler and cooling system - Potentiometric titration
ICS 13.060.50; 13.060.60
G76
National Standards of People's Republic of China
Boiler water and cooling water quality automatic continuous determination
Potentiometric titration
Automatic continuous determination of waterqualityforboilerandcooling
2017-09-07 Posted
2018-04-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard proposed by the China Petroleum and Chemical Industry Federation.
This standard by the National Standardization Technical Committee water treatment chemicals Technical Committee (SAC/TC63/SC5) centralized.
This standard was drafted by Ningbo Special Equipment Inspection and Research Institute, Shenzhen Special Equipment Safety Inspection Institute, Guangdong Special Equipment
Testing Institute of Dongguan Testing Institute, Shandong Institute of Special Equipment Zibo Branch, METTLER TOLEDO International Trading (Shanghai) Co., Ltd.
Division, Switzerland Wantong China Co., Ltd., CNOOC Tianjin Chemical Research and Design Institute Co., Ltd.
The main drafters of this standard. Zhou Ying, Zhangguang Guang, Wang Yi Zhuang, Zhang Wenhui, Zhao 荌 荌, Gong Yan, Diana Yin, Huang Rong, Li Lin.
Introduction
The issuing authority of this document draws attention to the fact that Chapter 4 of this document addresses the determination of methods and endpoints when statements of conformity with this document,
The order of determination may relate to "analytical methods and devices for continuous analysis of pH, pH of phenolphthalein, total alkalinity and chloride ion concentration" (Patent No.
ZL201210044088.8), the contents of Chapter 4 of this document, 6.1) a), d), e), 8.2.2 boiler water test
The order may be related to "multi-project continuous automatic analysis device for industrial boiler water quality testing and analysis method" (patent number.
ZL201410336615.1).
The issuing authority of this document has no position regarding the authenticity, validity and scope of these two patents.
The two patentees have assured the issuing authority of this document that he is willing to cooperate with any applicant on reasonable and non-discriminatory terms and conditions
Under the patent licensing negotiations. The two patentees' statements have been filed with the issuing authority of this document. Related information can be passed
Get the following contact information
The names of the two patentees are Shenzhen Special Equipment Safety Inspection Institute and Guangzhou Special Pressure Equipment Inspection Institute;
The addresses are Special Inspection Building No. 1032, Honggang Road, Luohu District, Shenzhen City, and No. 97 Baiyun Road, Yuexiu District, Guangzhou City.
Please note that in addition to the above patents, some of the contents of this document may still involve patents. The issuing agencies of this document are not responsible for identifying these specializations
Lee's responsibility.
Boiler water and cooling water quality automatic continuous determination
Potentiometric titration
1 Scope
This standard specifies the industrial boiler water, circulating cooling water and water, such as natural water conductivity, pH, phenolphthalein basicity, total alkalinity, chloride
And hardness and other items of automatic continuous determination method.
This standard applies to the determination of the conductivity of 10μS/cm ~ 10mS/cm; pH of 3 to 13; phenolphthalein basicity 0mmol/L ~
30mmol/L; total alkalinity 0.2mmol/L ~ 50mmol/L; chloride 5mg/L ~ 1500mg/L; hardness (to Ca2,
Mg2 meter) is 0.015 mmol/L to 15 mmol/L.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 601 chemical reagent standard titration solution preparation
GB/T 6682 analytical laboratory water specifications and test methods
GB/T 6904 industrial circulating cooling water and boiler water pH testing
Determination of conductivity of boiler water and cooling water GB/T 6908
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Automatic continuous determination of continuousdetermination
Continuous testing of two or more items of the same sample to be tested sequentially, and automatic measurement of the test results of multiple items are obtained at one time.
3.2
Titration curve titrationcurve
During titration, a graph of the relationship between the volume consumed by a standard titration solution and the corresponding measured value is recorded.
3.3
Jump point inflectionpoint
Titration curve, a price differential curve extreme points.
3.4
Hop recognition threshold
During automatic titration, the instrument recognizes the base value of the jump point.
Note. When the first derivative of the titration curve is greater than this value, it is recognized as a valid jump point.
3.5
Burette unit buretteunit
Dropping a standard titration solution combination device.
Note. Includes burette, reagent bottle, and aspirate standard vial solution from reagent bottle to the burette and add dropwise to the sample pipette.
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