Some standard content:
Electronic Industry Standard of the People's Republic of China SJ/T1008810090-91
《Zinc Sulfide for Phosphor》
《Cadmium Sulfide for Phosphor》
《Test Method for Zinc Sulfide and
Cadmium Sulfide for Phosphor》
Published on April 8, 1991
Implemented on July 1, 1991
Published by the Ministry of Machinery and Electronics Industry of the People's Republic of China Electronic Industry Standard of the People's Republic of China Test Method for Zinc Sulfide and Cadmium Sulfide for Phosphor phosphurs 1 Subject content and scope of application 1.1 Main content This standard specifies the fluidized bed zinc sulfide for use with optical shoes. 1.2 Specification This standard specifies the materials for obtaining optical shoes with fluidized bed zinc sulfide. 2 Reference standards Preparation of chemical reagent standard solution HB03 Preparation method of chemical reagent impurity dispersion GD603 Preparation method of chemical reagent preparation 5 Determination of light sulfide and rust content 3.1 Method for preparation of chemical reagent preparation 3.1 After the sample is dissolved in salt, use a home-made short-circuit liquid as an indicator and use EPDM as an indicator to determine the content of phosphur.
3.2 Preparation of Liquor
3.2.1 Salt: 2+1. Analytical grade:
5-2.2EA Standard drop wave: 0.1s/.
3.2.2.1 Preparation
According to the provisions of G6C1 17(1): Take 0TA, dissolve in 1000r water, cool, and control the mixture 3.2. 2. 2 Calibration
Control 601 (2): Specified: 800 ml of non-oxidizing agent with constant concentration of 0.258 (weighing 0.2 g), a little water, 6 mol/mL hydrochloric acid 2 M, 1 mol water to pH = 7-8. Add 0.0 M hydrogen-hydrogenation buffer, add 0.1% T indicator 1.1 mol EDTA solution until the red color changes to pure white. At the same time, do a blank test. The concentration of ethylenediaminetetraacetic acid (mol) is calculated according to the formula 1: Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China on April 1991, 1991-C7-01 implementation
In the formula: n
S/T 10090-91
F= (r=3× a1. 8 × 10 +
The base of zinc oxide is BF
The solution of ethylenediaminetetraacetic acid disodium is m
The mass of zinc oxide per mole is g/mal.
3.2.3 Chemical bag clear solution (pH: 1G)
The solution is prepared according to GB603 38(1): Weigh 54g of hydrogenated chromium salt in 200ml of water, add 350ml of carrier water, and dilute with water to 100ml.
3.2.4 Chrome black T dispersion liquid: 0.5%
The dispersion liquid is prepared according to GB603 (23): Weigh 0.0g of Chrome black T and 2% hydrochloric acid light glue, dissolve in ethanol and dilute with ethanol to 100ml. This solution must be prepared before use. 3.3 Instruments and preparation
The test results are analyzed by chemical analysis.
3.4 Determination steps
The product is not selected for each batch, and each test is measured twice. 3.4.2 Determination
0.3g of the sample (accurate to 0.0001g) is placed in a flask, and 6ml of hydrochloric acid (3.2.1) is added. The solution is dissolved and evaporated to dryness. Then 50ml of water is dissolved and transferred into 25gml of flask. Add 10 mm H2O ion solution (3.2.3) to the mixture, then add 2-3 mL of 0.5% chloramine indicator (3.2.4) and use (1D101/LLTA (3.2.2) to determine if the liquid changes from red to pure blue. 3.5 Expression and calculation of results 5.5.1 Calculate the percentage of zinc sulfate by using formula (2): Zns (%) ~ ++ × 97. 6 ×1u- × 100A
Wherein: C-EDTA standard solution concentration mol/LF.
-Amount of HIYIA standard solution, ml
-Mass of sample 8
Mass of each um of acylated bee g/mal,
3.5.2 The percentage of acylated bee is calculated according to (3): C-2× 144. 5× 10-
—Concentration of ELTA standard solution·mol/L+ Center of the formula
Amount of EDTA standard solution, m
× 10G
Mass of sample, limit:
S1/T0090--91
144.5—Mass of each um of chemical separation, g/mu! Each sample should reach the limit of single-line determination. The deviation should not exceed 0.2. The result should be expressed to two decimal places. The mass per unit volume should be measured when the sample is filled with water. The mass per unit volume should be expressed in g/cm2. 4.2 Instruments 4.2.1 A dynamic funnel is required, which includes the following parts: The diameter of the slide funnel is 51 mm, the non-porous measuring cup is 25 m above the surface and concentric with the cylinder, the moving plate has a moving speed of 50-60 H2, the water level at the end is about 105-122 H2, and its travel (from top to bottom) is 5 to 100 m. It should be ensured that the moving part is not transmitted to the cup. The base supports the measuring cup with a fertile 4.2.2
The volume of the cup is 25+0.(15cm, and the inner diameter is 30-1mm. Requirements: The cup funnel should be made of non-magnetic, corrosion-resistant and lubricating materials, and have sufficient wall thickness and hardness to prevent deformation and damage:
The inner surface of the ring and the sieve bucket should be polished.
4.2.3 The relevant sampling should have sufficient load sensing disk for C.05%, 4.3 Test installation
The looseness of the circulating bucket is measured only in the figure, as shown in the figure below, the dynamic bucket grid installation density measuring instrument schematic amplitude modulation lamp: 2-amplitude measurement standard: 3--drying bucket: 4-fixed control heat (after taking out the light:-open the old piece 7-flat piece 8 support sweep glue 9-power supply step 4.4 Measurement step
Four samples should be taken from each batch of products, and each sample should be determined separately, and the discarded sample The volume should not be less than: 4.4.2 Test strips
1. Before the test, the test rod must be processed through a 120-mesh screen. If there is undissolved powder, it should be selected in the ventilation control. b.
4.4.3 Determination
4.4.3.1 Hold the circulation hopper with your fingers and put the sample (not more than m) into the two hoppers! 4.4.3.2 Turn on the moving device and let the powder flow into the plate cup until it is completely filled. 4.4.3.3 Use a non-inductive non-electrolyte to scrape off the powder: 4.3.4 Clean the outside of the measuring cup: 4.4.3.5 Take out the cup and weigh the mass of the sample (accurate to 0.05g) 4.5 Calculate the bulk density of the sample according to the formula ():
武, n
The bulk density of the sample.m
The test piece in the measuring cup lasts for 1-2 hours. The amount of medical quantity 8
mother rod penetration, cm*,
the range of the data of each sample should not be greater than 3%, and the results should be expressed to two decimal places. 5 Determination of impurity content of gold, steel, nickel, lead and manganese 5.1 Method Summary
After the sample is dissolved in water, the specific wavelength of the atomic gas generated by the sample is measured to determine the content of the element in the sample.
According to the absorption coefficient of atomic absorption film, A=AC+L
under certain conditions, that is, the absorption coefficient and the absorption length L are determined, the absorption coefficient A is expressed by the speed of the ion flow, and the absorption coefficient C is expressed by the ratio of the absorption coefficient C to the absorption coefficient C. The relationship is calculated, and the absorption curve of the non-filtered and filtered parts is measured by the instrument. The two are compared to calculate the content of the measured element in the sample. 5. 2 Reagents
5.2.1 Hydrochloric acid: analytical grade.
5.2.2 Phosphoric acid analytical grade,
5.2.3 Impurity standard impurity level
5.2.3.1 Iron standard solution
Perform according to C86022: weigh 0.64g of sulphuric acid CFcNH.Or <2) Now proceed
Weigh 0.276g of anhydrous monomanganese (MnS0) burned to a temperature of 100-500℃. Transfer to 1U00ml volumetric flask. Use water to dilute until the solution contains 10 pm of manganese ions per ml. b. Collect 9.1ml of 0.100mol/L high-chain acid standard solution, inject it into a 100ml volumetric flask, and use water distilled from high-chain acid to dilute until the solution is diluted to 1 pm. 5.3 Instruments
Laboratory instruments.
5.5-2 Atomic absorption spectrophotometer and induction lamps such as steel, nickel, pin, and chain. Under the best working conditions of the instrument, any atomic absorption spectrophotometer that can meet the following indicators can be used. 5.3.2.1 For low sensitivity, the absorbance reading of the highest standard solution among the five arithmetic standard solutions shall not be less than 0.25. 5.3.2.2 For linearity, the difference between the absorbance readings of the highest and lowest concentration standard solutions among the five arithmetic standard solutions shall not be less than 0.9 times the absorbance reading of the lowest standard solution and the zero concentration solution. 5.3.2.3 Low stable phase: The absorbance test data of 11 measurements of the highest concentration standard solution and the required concentration standard solution are listed as follows: The cumulative variation of the absorbance readings of the zero concentration standard solution and the most remote concentration standard solution relative to the average value is 1.5%-0.6%. The coefficient of variation of the absorbance of the zero concentration standard solution and the most remote concentration standard solution is calculated as follows: $
Where: S1—is the coefficient of variation of the absorbance readings of the zero concentration standard solution and the highest concentration standard solution, respectively; C0, C1—is the average value of the absorbance readings of the zero concentration standard solution and the most remote concentration standard solution, respectively.
See Appendix for the working procedures of the instrument.
5.4 Determination steps
5.4.1 Sample
Weigh four samples with a mass of % (accurate to .00), and put them into a group of 100m2 block machines, add 15% salt and 10% 1/100 90-91% acid, heat and decompose, add ml nitric acid, and adjust to about 10ml. After cooling, transfer to a 50ml volumetric flask for determination of the content of each element.
Blank test
Blank test with sample:wwW.bzxz.Net
5. 4.3 Determination
Among the four samples to be tested: (i) one part is not standard solution: (ii) one part is standard solution: (iii) one part is standard solution of each element in proportion to each other, diluted with water to the scale, calibrated with air, and then measured absorbance by atomic collector. Draw a working curve with the concentration of the element to be tested as the horizontal axis and the absorbance as the horizontal axis. Extend the curve and put it in the place where the curve is equal to the absorbance of the element to be tested. Carry out two measurements respectively and take the average value. Calculate the percentage of the element (steel, iron, nickel, tantalum, manganese) (X) according to the formula (S), CV × 0 × 100 where: - the concentration of the element obtained from the working curve, mg/ml; - the volume of the solution to be tested, m - the sample volume, m. Use AA SJ/T :0090--S1
Appendix A
device work and other parts
(supplement)
4 classic Beijing sub-receiver spectrophotometric plan for the time, brocade, chain T tea parts buckle table A heat setting, table people only comfortable work conditions plan
Xie Le Du
engineering work
wave dyeing nm
light telephone ma
disease seam avoidance A
Li gas volume anin
Y recovery sparse
drama fixed aggregation
Additional instructions:
Get the hollow reading lamp
Wen Ke Lin
Hollow level dynamic
Out of the connection measurement
Confirm the hollow adjustment board woman! Book Lan Xin reading lamp
Lamp report road hundred
Add phantom printing and display
Han Xin Ming sense lamp
Point connection measurement
This standard is a white machine unique electronic industry production power one standardization institute Beijing chemical plant all kinds of tunnel west color picture tube total! Negative disk car. East standard mainly starts Sa people defense Lan Guan, Shi He Sheng, Liu Zhi received. 12
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