Method for detecting components of industrial ammonium sulfate product
A technology of ammonium sulfate and products, applied in the field of element detection and analysis, can solve the problems of long detection process, time-consuming and laborious ammonia distillation, secondary environmental pollution, etc., and achieve the effect of high accuracy and efficient and fast determination process
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example 1
[0034] In an example, the ICP-OES is an iCAP6300 Inductively Coupled Plasma Atomic Emission Spectrometer from Thermo Fisher Corporation of the United States.
[0035] 1. Ammonium sulfate sample digestion preparation
[0036] Weigh 0.5g of ammonium sulfate sample, first wash the container wall with 5 mL of water, add 15 mL (1+4) dilute hydrochloric acid to heat and digest the sample at low temperature, then raise the temperature to boil the solution and keep it for 3 minutes, dilute with water to 100 mL after cooling Volumetric flask, used as the ammonium sulfate sample detection solution prepared by digestion to be tested. Among them, (1+4) dilute hydrochloric acid is prepared by mixing concentrated hydrochloric acid with a mass percentage concentration of 36% to 38% according to the ratio of 1 part of concentrated hydrochloric acid and 4 parts of water.
[0037] 2. Calibration curve series standard solutions
[0038] Calibration curve series standard solutions are digested ...
example 2
[0044] Except for the following difference, all the others adopt the same method as Example 1 to measure the ammonium sulfate sample of this example: take 1.0g of ammonium sulfate sample, add (1+4) dilute hydrochloric acid 20mL, boil for 5min, dilute Constant volume 200mL.
example 3
[0046] Except for the following differences, all the others adopt the same method as Example 1 to measure the ammonium sulfate sample of this example: take 0.6g of ammonium sulfate sample, add (1+4) dilute hydrochloric acid 18mL, boil for 4min, dilute Constant volume 150mL.
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