Shen ChangHong Definition and scope of application
This method uses dithizone spectrophotometry to determine cadmium.
This method is applicable to surface water, groundwater, domestic sewage and industrial wastewater
When the volume of water sample is 1ml and a 10 mm diameter colorimetric tube is used, the detection limit of this method is 0.01mg/l, the detection limit is 0.04mg/l, and the detection limit is 0.50mg/l.
principle
In the strong alkaline solution, cadmium ion and dithizone produce complex, which is determined by spectrophotometry.
The cadmium test method developed by Shenzhen Changhong Technology Co., Ltd. (hereinafter referred to as shenchanghong) is simple, fast and economical in operation, and the test results are accurate and reliable. Shenchanghong can provide a complete analysis scheme of cadmium test method, and users do not need to prepare their own cadmium reagents. This project includes cadmium determinator, cadmium reagent and so on. Cadmium reagent is used together with cadmium analyzer. The analytical procedure is simple and convenient, and it meets the requirements of national industry standards.
Product features:
● no need to prepare cadmium reagent: the reagent prepared by a certain proportion of chemical components required for cadmium analysis can greatly save the preparation time of cadmium reagent;
● time saving: the whole analysis process, including water sampling, colorimetric determination and other steps, takes much less time than traditional methods;
● simple operation and easy to learn: the operation guide with pictures and texts is convenient for mastering the cadmium analysis method in a short time.
Cadmium analysis steps of shenchanghong:
(1) Preparation of cadmium reagent and water sample
Put the reagent required for cadmium analysis into each colorimetric tube for cadmium test, add a proper amount of water sample according to the instructions, and then tighten the bottle cap.
(2) Cadmium colorimetric determination
Shenchanghong's Cadmium tester (chcd-170 / P chcd-170 / mulp-8a / C / D / pmulp-4c / 8C / mulp-4b / gw-2000 / chmm-900, etc.) selects the corresponding cadmium test program in the main menu, does not need to re-establish the standard curve, only needs to put the cadmium reagent test tube into the instrument to read out the cadmium value expressed in concentration single bit, and can save the record results.
Brief introduction of shenchanghong cadmium analysis system
The cadmium analysis system provided by shenchanghong includes the main machine of cadmium analyzer and the matching cadmium reagent.
Instrument host: according to the needs of different customers, shenchanghong company can provide a variety of models of cadmium analyzer for cadmium determination.
