Technology for detecting copper in livestock and poultry manure

Abstract

The invention discloses a technology for detecting copper in livestock and poultry manure. The technology comprises the following steps: (1) preparing and refrigerating copper standard stock solution; (2) heating and decomposing a manure sample in a crucible; (3) adding nitric acid, hydrofluoric acid and perchloric acid in the crucible, covering the crucible, heating the crucible on an electric hot plate at 160-210 DEG C for 1.5 hours, uncovering the crucible, and continuously heating; (4) adding 2 ml of 55% salpeter solution in the manure sample, dissolving residues in a tepidity manner, transferring the solution to a 100 ml of volumetric flask, cooling at the room temperature for constant volume and detection, and preparing at least two parts of full-procedure blank solution simultaneously; (5)transferring the treated sample solution reagent blank solution and the copper standard stock solution to a flame atomic instrument for measurement. According to the invention, reasonable solution preparation and the flame atomic absorption spectrometry method are combined to accurately measure the content of copper in livestock and poultry manure, and the operating procedures are simple.

Description

technical field [0001] The invention relates to a detection technology, in particular to a detection technology for copper in livestock and poultry manure. Background technique [0002] In recent years, my country's livestock and poultry breeding industry has developed rapidly and has become a pillar industry for the development of rural economy in many areas. However, while the livestock and poultry breeding industry is developing, livestock and poultry manure has also become the main source of rural environmental pollution One of the reasons is that according to reports, current feed additives often contain high levels of copper and zinc, and excessive heavy metal elements are excreted into the soil or waters by the animals they raise, or are applied to the farmland in the form of organic fertilizers, causing damage to the soil and water sources. serious harm. Therefore, accurate determination of copper content in livestock and poultry manure plays an important role in manu...

AI Technical Summary

Problems solved by technology

[0002] In recent years, my country's livestock and poultry breeding industry has developed rapidly and has become a pillar industry for the development of rural economy in many areas. However, while the livestock and poultry breeding industry is developing, livestock and poultry manure has also become the main source of rural environmental pollution One of the reasons is that according to reports, current feed additives often contain high levels of copper and zinc, and excessive heavy metal elements are excreted into the soil or waters by the animals they raise, or are applied to the farmland in the form of organic fertilizers, causing damage to the soil and water sources. major hazard

Therefore, the accurate determination of copper content in livestock and poultry manure plays a very important role in the treatment of manure, sewage discharge and environmental protection;