YS/T 1014.5-2014 (YST1014.5-2014)

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YS/T 1014.5-2014	English	139	Add to Cart	2 days [Need to translate]	Chemical analysis methods of bismuth trioxide. Part 5: Determination of moisture. Gravimetric method	YS/T 1014.5-2014	Valid	YS/T 1014.5-2014

YS/T 1014.5-2014
Chemical analysis methods of bismuth trioxide Part 5. Determination of moisture Gravimetric method
ICS 77.120.99
H13
People's Republic of China Nonferrous Metals Industry Standard
Bismuth oxide chemical analysis
Part 5. Determination of moisture content - Gravimetric method
Part 5. Determinationofmoisture-
Issued on. 2014-10-14
2015-04-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
YS/T 1014 "Methods for chemical analysis of bismuth trioxide" is divided into five sections.
--- Part 1. bismuth trioxide contents - Na2EDTA titration;
--- Part 2. silver, copper, magnesium, nickel, cobalt, manganese, calcium, iron, cadmium, lead, zinc, antimony, aluminum, sodium, sulfur content - Inductively coupled plasma
Atomic emission spectrometry;
--- Part 3. Determination of chlorine content of silver chloride turbidimetry;
--- Part 4. loss on ignition - Gravimetric method;
--- Part 5. moisture content - Gravimetric method.
This section YS/T 1014 Part 5.
This section drafted in accordance with GB/T 1.1-2009 given rules.
The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.
This section is responsible for drafting. Guangdong pilot dilute Materials Co., Ltd., Zhuzhou Smelter Group Co., Ltd.
Participated in the drafting of this section. Guangzhou Nonferrous Metal Research Institute, Beijing Nonferrous Metal Research Institute.
The main drafters of this section. Like Zhu Fang, Dai Fengying, Peng Xinxiang, Zhang Li, Xu Jieyu.
Bismuth oxide chemical analysis
Part 5. Determination of moisture content - Gravimetric method
1 Scope
YS/T 1014 This section specifies the method for determination of bismuth trioxide in water.
This section applies to the determination of bismuth trioxide in water. The measurement range. 0.05 to 0.30%.
2 Method summary
Weigh a certain amount of the sample, placed in a weighing bottle, dried at 105 ℃ ± 5 ℃, thereby calculate the sample moisture content.
3 Instrument
3.1 Analysis of balance. a sense of the amount of 0.1mg.
3.2 Ovens. temperature can be stabilized at 105 ℃ ± 5 ℃, while not drying oven other materials.
3.3 dryer.
4 Sample
Sample required uniform, dry and seal intact.
Step 5 Analysis
5.1 Sample
Weigh 15g sample, accurate to 0.0001g.
5.2 Determination of the number of
Independently measured twice and averaged.
5.3 Determination
A sample (5.1) has been placed at 105 ℃ ± 5 ℃ constant weighing bottle and weighed, placed in a constant temperature oven dry at 105 ℃ ± 5 ℃
After removing the drying 2h, cooled in a desiccator 20min, weighing, and then into the oven, remove the rear 105 ℃ ± 5 ℃ dried 1h, in the dryer
Cooling 20min, weighing, and so forth until dry constant (around mass not greater than 0.0003g may be regarded as constant).
Calculation results of the analysis of 6
The moisture content in mass fraction w of water, and its value is expressed in%, according to equation (1).
w = moisture
m1-m2
m × 100
(1)