Mercury automatic detection system and its pretreatment device

A pretreatment device and automatic detection technology, which is applied in the preparation of test samples, color/spectral characteristic measurement, material excitation analysis, etc., can solve the problems of complicated manual work, and achieve the effect of easy control and easy cleaning

CN105466740BInactive Publication Date: 2020-01-03东亚DKK株式会社
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-01-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a mercury automatic detection system and a preprocessing device thereof. The system and the device can automatically detect mercury on a site where samples required to detect exist, and accurate detection in the device can easily perform in clean and continuous manner, and reagent consumption can be easily controlled. In the mercury automatic detection system and the preprocessing device thereof, the downstream ends of the pipings (L1)-(L4) in which potassium permanganate solution and other decomposition reagent circulate and the piping (L5) in which a hydroxylamine hydrochloride solution circulates are respectively connected with the middle part of a piping (L10), so as to inject the reagent into a metering reaction tank (1) from the downstream end of the piping (L10). The piping (L5) in which the hydroxylamine hydrochloride solution circulates is connected with the piping (L10) on the upstream side of the piping (L3) in which the potassium permanganate solution circulates.
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Description

technical field

[0001] The invention relates to a mercury automatic detection system and a pretreatment device thereof. More specifically, it relates to a mercury automatic detection system and a pretreatment device thereof which convert mercury and mercury compounds in a sample liquid into mercury gas for detection. Background technique

[0002] In order to deal with the problem of environmental pollution, it is necessary to carry out accurate detection of pollutants. Among the pollutants, mercury is particularly attracting attention as the cause of Minamata disease.

[0003] There is known a mercury detection method in which mercury compounds in a sample are decomposed into mercury (II) ions, converted into mercury gas by a reduction gasification method, and then detected. In order to convert a mercury compound into mercury gas, it is necessary to sequentially react various reagents, and a heating process is required, so manual work is complicated.

[0004] In response ...

Examples

Embodiment Construction

[0068] Next, refer to figure 1 , a mercury automatic detection system according to one embodiment of the present invention will be described. Moreover, in the following description, values ​​such as volume, concentration, time, etc. are listed by taking the sample liquid with a mercury content of 4 ppb or less as an example, but these values ​​are only examples, and the present invention is not limited to these values. also, figure 1 The configuration of the device shown is just an example, and the present invention is not limited to figure 1 The specific piping arrangement, etc. shown.

[0069]The mercury automatic detection system of this embodiment is roughly composed of a metering reaction tank 1, a decomposition tank 2, a dehumidifier 3, a detector 4, piping L1-L7, piping L10-L14, piping L21-L29, valves V1-V10, pumps P1- P10 and the control part (not shown) which control the said whole are comprised.

[0070] In the mercury automatic detection system of the present em...