Rapid measurement reagent for manganese concentration in water and use method thereof

Abstract

The invention relates to a rapid measurement reagent for manganese concentration in water and a use method thereof. The rapid measurement reagent for the manganese concentration in water comprises a reagent A and a reagent B in a mass ratio of 1:1, wherein (1) the reagent A comprises the following components in percentage by weight: 5.0-15.0 anhydrous potassium pyrophosphate, 10.0-30.0 disodium hydrogen phosphate, 0.5-5.0 citric acid and 60-80 anhydrous sodium sulphate; (2) the reagent B comprises the following components in percentage by weight: 5-25 potassium periodate and 75-95 potassium chloride. The use method of the rapid measurement reagent comprises the following steps: adding the reagent A to a water sample to be measured, adding the reagent B after the reagent A is dissolved; standing for 10 minutes; and comparing colors with a standard colorimetric card, a colorimetric disc or a colorimetric meter, and reading the manganese concentration. The invention has the advantages of simple and convenient operation, accurate results, low price, convenient transportation and carrying, on-site measurement suitability, and the like.

Description

Reagent for Determination of Manganese Concentration in Water and Its Application Method 【Technical field】 The invention relates to a reagent for measuring manganese concentration in water and a method for using the reagent. 【Background technique】 Manganese compounds have various forms, mainly including divalent, trivalent, tetravalent, hexavalent and heptavalent. Manganese is one of the trace elements necessary for living things. Due to the lack of oxygen in groundwater, manganese exists in the form of soluble divalent manganese, while in surface water there are soluble complexes of trivalent manganese and suspensions of tetravalent manganese. The content of manganese in environmental water samples ranges from a few micrograms per liter to hundreds of micrograms per liter, rarely exceeding 1 mg / L. Manganese salts are not very toxic, but the water can leave unsightly scars on clothes, textiles and paper, so the manganese content in general industrial water is not allowed...

AI Technical Summary

Problems solved by technology

However, atomic absorption requires instruments. The main disadvantages of formaldehyde oxime method and potassium periodate method are cumbersome operation steps, long analysis cycle, and short liquid reagent stability time.

Moreover, these determination methods are only suitable for laboratory tests and cannot meet the requirements of field tests.

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