Molybdate radical ion and nitrite radical ion concentration test card and its preparing method

A technology of nitrite ion and molybdate ion, applied in chemical method analysis, measuring device, instrument and other directions, can solve the problems of difficult realization, high cost, large amount of reagents, etc., and achieves simple process, simple operation and good repeatability. Effect
CN1648642AInactive Publication Date: 2005-08-03WUHAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
WUHAN UNIV OF SCI & TECH
Publication Date
2005-08-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a kind of molybdate radical ion and nitrite radical ion concentration test card and its preparation process. The test card includes test paper and standard color check card, and the test paper has molybdate radical ion indicating color developing paper sheet and nitrite radical ion indicating color developing paper sheet fixed on the base sheet. The molybdate radical ion indicating color developing paper sheet is prepared through soaking filter paper in mixed solution of gallic acid and hydroxylamine sulfate, drying and photophobic keeping; and the nitrite radical ion indicating color developing paper sheet is prepared through soaking filter paper in mixed solution ofaminobenzene sulfonic acid, dihydrochloride-1-naphthyl ethylene diamine and tartaric acid, drying and photophobic keeping. The present invention may be used in testing the concentration of molybdate radical ion and nitrite radical ion simultaneously.
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Description

1. Technical field

[0001] The invention relates to an anion concentration test card and a preparation method thereof, in particular to a molybdate ion and nitrite ion concentration test card and a preparation method thereof. 2. Background technology

[0002] Motor vehicle engine cooling systems contain a variety of metals and alloys such as copper, solder, brass, iron, cast iron, aluminum and magnesium. These metals are susceptible to corrosion in corrosive liquids and high temperature and high pressure environments, which will affect the normal operation of the engine combustion chamber and cause the engine to overheat and fail. The engine failure rate caused by the engine cooling system of heavy-duty mining vehicles is as high as 40% every year. Therefore, it is particularly important to maintain the cooling system in time to maintain the normal freezing point of the coolant and ensure the appropriate level of anti-corrosion agents. Anti-corrosion agents are usually added...

Claims

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