Determination reagent for trace content of heavy metal
A technology of heavy metals and reagents, which is applied in measurement devices, electrochemical variables of materials, material analysis by electromagnetic means, etc., can solve the problems of poor reproducibility and low sensitivity, and achieve the effect of good reproducibility and high sensitivity
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Embodiment 1
[0020] Embodiment 1: Get blood sample 0.1mL, measure the lead content therein. Add 3mL of special reagent, select formula 1 in Table 1, the reagent contains 1.5% chromium trichloride, 2.5% potassium nitrate, 0.05% mercury dichloride, 0.15% propylene glycol, use nitric acid to adjust the pH value to 1, mix well and dissolve at the anode Measured on a voltammetry electrochemical instrument.
Embodiment 2
[0021] Embodiment 2: Take 0.5 mL of sewage, and measure the copper content therein. Add 5mL of special reagent, select formula 2 in Table 1, the reagent contains 2% chromium trichloride, 1.2% sodium chloride, 0.01% mercury dichloride, 0.5% ethanol, use phosphoric acid to adjust the pH value to 1.5, mix evenly on the anode The stripping voltammetry was carried out on an electrochemical instrument.
Embodiment 3
[0022] Embodiment 3: take milk 0.5mL, measure the zinc content therein. Add 5mL of special reagent, select formula 3 in Table 1, medium reagent contains 1% chromium trichloride, 3% sodium nitrate, 0.01% mercury dichloride, 0.3% ethanol, use nitric acid to adjust the pH value to 1, mix evenly on the anode The stripping voltammetry was carried out on an electrochemical instrument.
[0023] Similarly, according to the other formulations in Table 1, other components and detection methods are the same as the above three examples, and can be applied to detect the content of heavy metal ions in fields including biomedicine, food, and environment.
[0024] Detection serial number
[0025] Because the anode stripping voltammetry method is easy to operate, the measurement reagent of the present invention has good reproducibility and high sensitivity when measuring samples, and can measure PPb orders of magnitude.
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