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Method for determining content of beryllium in sludge

A determination method and content technology are applied in the field of beryllium content determination in sludge, which can solve the problems of expensive instruments and equipment, and achieve the effects of simple operation, less acid consumption, and reduced work intensity.

Inactive Publication Date: 2015-05-06
大连大公检验检测有限公司
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Problems solved by technology

Inductively coupled plasma-atomic emission spectrometry, fluorescence and atomic absorption all have relatively high sensitivity, but the equipment is relatively expensive

Method used

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Embodiment 1

[0013] The method for measuring beryllium content in sludge is characterized in that, draw 10 mg of beryllium oxide standard solution in a 100 mL beaker, add water to 200 mL, add 10 mL of 20% EDTA solution, stir, and heat to make beryllium hydroxide precipitate and condense, filter paper at a medium speed Add a little pulp to filter, wash the precipitate and the original beaker with 0.5% hot ammonia water for 3 times, wash the bottle with hot hydrochloric acid for several times until the precipitate dissolves in the original beaker, wash with 2% hot hydrochloric acid for 5 times, and wash with hot water for 2 First, the volume of the solution is about 100mL, add 10mL of 20% EDTA solution, stir, add concentrated ammonia water until there is a lot of ammonia smell, then add 10mL in excess, and heat to make beryllium hydroxide precipitate and condense, filter with a medium speed filter paper and add a little pulp , wash the precipitate 3 times with 0.5% hot ammonia water, wash 2-3...

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Abstract

A method for determining the content of beryllium in sludge comprises the following steps: absorbing a beryllium oxide standard solution, adding an EDTA solution, stirring, heating for agglomerating a beryllium hydroxide precipitate, filtering through adding a small amount of paper pulp by using a medium speed filter paper, washing the precipitate by using hot ammonia water, purging with hot hydrochloric acid through using a washing bottle several times until the precipitate is dissolved in an original beaker, washing by using the hot hydrochloric acid, washing by using hot water to obtain a solution with the volume of about 100mL, adding the EDTA solution, and stirring. No national standard methods of determination of beryllium in soil exist. The method has the advantages of satisfactory determination result, simple operation, small dosage of the acid, and reduction of the work strength of analyzers.

Description

technical field [0001] The invention relates to the technical field of metal content determination, in particular to a method for determining beryllium content in sludge. Background technique [0002] Beryllium is a highly toxic metal element that was first found to be carcinogenic. Metal beryllium and beryllium oxide have little toxicity, but soluble beryllium salts can cause organ or tissue lesions and cause cancer. With the rapid development of modern industry, the monitoring technology of beryllium in environmental samples has received widespread attention, and monitoring beryllium in soil and sediment is of great significance. [0003] Beryllium is the lightest metal with a hard texture and a gray appearance. It exists in mineral rocks such as emeralds. Beryllium has the advantages of resistance to metal fatigue, corrosion resistance, insulation, non-magnetism and light texture. It is relatively insoluble in water, but is tightly adsorbed by oils, and beryllium can b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/02
Inventor 关杰关宇江美玲曹卉王清
Owner 大连大公检验检测有限公司
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