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Analysis and detection method for beryllium, copper, chromium and iron elements in beryllium-containing sewage

A detection method and element technology, applied in the field of environmental analytical chemistry, can solve the problems of cumbersome cultivation and preparation of biological agents, unsuitability for large-volume sewage treatment, and a large number of treatment materials, and achieve rapid and accurate analysis characteristics, wide detection range, and good resistance The effect of interference ability

Inactive Publication Date: 2020-04-10
西北稀有金属材料研究院宁夏有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method has high treatment costs; and produces too much sludge; the cultivation and preparation of biological agents is cumbersome, and is not suitable for large-scale sewage treatment; in addition, it requires a large number of treatment materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: a kind of analysis and detection method of beryllium-copper-chromium-iron element in beryllium-containing sewage, it comprises step 1, accurately pipette 10.00~100.00mL containing beryllium sewage water sample in 250mL polytetrafluoroethylene beaker I, add 1~ 10mL of hydrochloric acid-nitric acid (hydrochloric acid: nitric acid = 1:1, volume ratio) to acidify the water sample, (analytical pure or superior grade), evaporate to dryness on a low-temperature electric heating plate at 120-140°C, remove organic matter and other volatiles, and cool to After room temperature, add 1-10mL hydrochloric acid (analytical pure or superior grade) for leaching, then transfer to a 100mL volumetric flask II, dilute to the 100mL mark, and test.

[0013] Step 2, the solution to be tested is injected into an inductively coupled plasma spectrometer, and the Be element is measured at a wavelength of 234.861nm, the Cu element is measured at 324.754nm, the Cr element is measured at...

Embodiment 2

[0015] Embodiment 2: An analysis and detection method of beryllium-copper-chromium-iron element in beryllium-containing sewage, the same as embodiment 1, the difference is that the hydrochloric acid in the leaching step is replaced by nitric acid.

[0016] The foregoing embodiments utilize hydrochloric acid / nitric acid to acidify beryllium-containing sewage, and process samples by evaporating to dryness and leaching steps in a polytetrafluoroethylene beaker, which is suitable for analysis and determination; utilize an inductively coupled plasma spectrometer to measure beryllium-copper-chromium-iron elements in beryllium-containing sewage, and analyze Fast and accurate.

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Abstract

The invention provides an analysis and detection method for beryllium, copper, chromium and iron elements in beryllium-containing sewage. The method comprises the following steps: S1, transferring 10.00-100.00 mL of beryllium-containing sewage sample into a 250mL polytetrafluoroethylene beaker I; adding 1-10mL of hydrochloric acid-nitric acid to acidify the water sample, placing the water sample on a low-temperature electric heating plate at 120-140 DEG C to evaporate to dryness, removing organic matters and other volatile matters, cooling to room temperature, adding 1-10mL of hydrochloric acid to leach, transferring to a 100mL volumetric flask II, diluting to 100mL scale, and waiting for detection; and S2, injecting the to-be-detected solution into an inductively coupled plasma spectrometer, comparing the to-be-detected solution with a national standard solution, and converting the mass concentration through emission intensity to achieve the quantification purpose. The method has thecharacteristics of better anti-interference capability, wider detection range and quickness and accuracy in analysis, and can be used for solving the problem of monitoring beryllium-copper-chromium-iron element components in water samples before, in and after beryllium-containing sewage treatment.

Description

technical field [0001] The invention relates to an analysis and detection method for beryllium-copper-chromium-iron elements in beryllium-containing sewage, and belongs to the field of environmental analytical chemistry. Background technique [0002] Beryllium has the density of magnesium and the stiffness of tungsten, the strongest ability to transmit X-rays, known as "metallic glass", and has excellent machining performance and thermal performance, so it has broad application prospects. Beryllium and beryllium alloys are irreplaceable strategic metal materials in aviation, aerospace, military industry, electronics, nuclear energy and other fields. Beryllium and its compounds can cause acute and chronic beryllium disease, and may have carcinogenicity and genotoxicity. The analysis and detection of beryllium-containing sewage has been studied and valued by people, and the analysis and detection of beryllium-containing sewage can promote the development of beryllium industry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73G01N1/38G01N1/44
CPCG01N1/38G01N1/44G01N21/73
Inventor 陈红李晖王志萍王巧
Owner 西北稀有金属材料研究院宁夏有限公司