Wuhan Jisi Instruments & Equipment Co., Ltd

Main Products: ion chromatograph, ultrapure water machine, HPLC, teaching machines for ion chromatography, tissue cell destroyer, grinder, intelligent pipette, floc monitoring analyzer, Atomic Fluorescence Spectrometry, Atomic Fluorescence Spectrometry Speciation Analyzer, Zinc and Cadmium Signal Intensifier, HPLC/IC BIOCHEMICAL MULTIFUNCTIONAL DETECTOR

Contact Supplier Chat Now

Home > Blog > The Significance of Elemental Speciation Analysis

Mr. Alec Wu

I/E Manager

Chat Now

Your inquiry content must be between 10 to 5000 characters

Please enter Your valid email address

Get quotes from multiple Verified Suppliers simultaneously.

The Significance of Elemental Speciation Analysis

Mr. Alec Wu April 2, 2018

In nature, elements can exist in many different forms of compounds, and the toxicity of these compounds is closely related to their speciation of the existence.

As for the arsenic compounds, the toxicity of inorganic arsenic much higher than the organic one-- and the more organic perssad combined with,the less the toxicity of arsenic is; for mercury compounds, the toxicity of organic mercury is far bigger than inorganic one, and the toxicity of alkyl mercury is greater than that of aryl mercury.

Therefore, in the determination of arsenic, mercury and other elements to evaluate its toxicity, speciation analysis is more scientific and accurate than the determination of total amount.

1. Existing forms of arsenic

Main arsenic compounds found in the air, soil, water and sediments are As2O3 or arsenite (As3 ), arsenate (As5 ), monomethylarsonic acid (MMA) and two methyl arsenate (DMA); in seafood, they are in the forms of arsenobetaine (AsB) and arsenocholine (AsC).
In addition, there are other more complex arsenic compounds, such as arsenic sugar (AsS), arsenolipid compounds (AsL) in seaweed.

2. The Existing Speciation of Mercury

Common speciation of mercury in the environment include metallic mercury, inorganic mercury (monovalent and two valence compounds), methylmercury, ethyl mercury, and phenyl mercury,etc.

Mercury and its compounds are easily dissolved in fatty substances, and are concentrated and enriched gradually through food chains (especially the aquatic food chains),which results in the mercury content in aquatic organisms higher than that in environmental waters.