Luoyang Yuboo Testing Technology Co., Ltd.
What is an inductively coupled plasma emission spectrometer？
Release Time:
2023-12-28 15:05
Inductively coupled plasma emission spectrometer refers to an instrument that uses inductively coupled plasma as the excitation light source to analyze the measured element based on the characteristic spectral lines emitted by the atoms in the excited state when they return to the ground state. The energy level structure of the tested element atoms is different, so the characteristics of the emission spectrum lines are different. Based on this, qualitative analysis of the sample can be carried out
Inductively coupled plasma emission spectrometer refers to an instrument that uses inductively coupled plasma as the excitation light source to analyze the measured element based on the characteristic spectral lines emitted by the atoms in the excited state when they return to the ground state. The energy level structure of the tested element atoms is different, so the characteristics of the emission spectrum lines are different. Based on this, qualitative analysis of the sample can be carried out; The concentration of the atoms of the tested element is different, so the emission intensity is different, which can achieve quantitative determination of the element. ICP-AES can simultaneously determine most elements in the periodic table (metal elements and non-metallic elements such as phosphorus, silicon, arsenic, boron, etc.), and all have good detection limits. According to the characteristics and concentration of the matrix, the precision is generally better than 4%. The linear range of the detector can reach 4-5 M levels. Due to the corrosive effect of hydrofluoric acid on glass injection systems, it is necessary to ensure that the sample is free of fluoride ions or use a hydrogen acid resistant injection system during sample determination. [1]
Due to the salt effect caused by high salt content, it is generally required that the salt content M (TDS) of the test solution should not exceed 1%. If it exceeds this, a high salt atomizer should be used, with a maximum of 4%. If the salt is grouped into alkali metal salts, the tolerance is lower. Due to the complex matrix of soil samples, matrix effects can lead to reduced detection ability and increased errors. Internal standard method, matrix matching method, standard addition method, chemical separation and addition of inhibitors can be used to reduce matrix interference during measurement.
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