Single-channel heavy metal detector

1. Instrument structure

2. Overview

WNK-TSMD1001 Portable heavy metal rapid detector is a high-tech product independently developed by Wuhan Academy of Agricultural Sciences. The detector uses anodic stripping voltammetry, adopts portable design, and is equipped with disposable screen-printed electrodes. For the first time, the application of dilute acid extraction-extraction-purification-electrochemical sensing technology in the field of grain and oil heavy metal rapid detection. High detection sensitivity (0.5 ppb), good stability and precision, small and portable, easy to operate, can complete the rapid determination of lead, cadmium and other heavy metals in grain within 10 minutes, and can expand the detection of heavy metal content in water, vegetables, soil and other heavy metals. The WNK-TSMD1001 portable heavy metal rapid detector won the "Gold Award Agricultural Products" of the 16th China Agricultural Expo in 2019 and was recognized as "Innovative Products of Wuhan City in 2020".

3. Technical parameters

1) Detection channel: single-channel separate detection;

2) Detection type: can detect lead, cadmium, follow-up can support the addition of arsenic, mercury and selenium and other elements;

3) Detection ability: can be suitable for food, water, vegetables, soil, tea and salt samples rapid determination of heavy metal content;

4) reagent safety and environmental protection: detection reagents do not produce heavy metal waste liquid, safe and environmental protection, effectively avoiding the existing electrochemical heavy metal rapid detection products on the market reagent safety problems;

5) electrode: use plug-in ready-to-throw screen printing electrode, no electrode treatment, stable performance, easy operation;

6) detection efficiency and fast: 10 min can complete the determination of heavy metals such as lead, cadmium in food;

7) high sensitivity: quantitative limit

8) potential Indication error ≤ 0.02 V, current indication error ≤ 0.003 µA, peak potential repeatability ≤ 2%;

9) Accurate and reliable results: low and high concentration accuracy (relative error) ≤ 12%, stability (coefficient of variation)

instrument features

1) Host size: 450 * 320 * 180 mm, host weight: 5 Kg;

2) Working power supply: AC power supply 220 V10%, 50/60 Hz;

3) Working environment: ambient temperature: 10 ℃ -30 ℃; humidity 80%;

4) Detection method: fast detection, accurate detection flexible optional;

5) Hardware configuration: capacitive touch screen: 10 inches, resolution: 1280 * 800, Android system , memory: 1 GB, body storage: 8 GB;

6) battery life: instrument built-in large-capacity lithium battery, battery life up to 8 hours or more;

7) storage capacity: random software provides data storage, printing, query and other management functions, data storage capacity of not less than 1000000 sample junction

fruit;

8) communication interface: support WIFI interface, 4G (customized, can realize wireless Internet access and data transmission function, can export experimental data according to demand);

9) electrode plug is easy to separate, easy for users to plug electrodes;

10) printing: built-in thermal printer, support 58 mm printing paper, can automatically or manually select the printing test results.

equipment is compact and lightweight, with a suitcase-sized toolbox loaded with instruments and tools used for testing, easy to carry, indoor field, want to test

product performance

1) body integrated design, high definition screen LCD display, intuitive reading, user-friendly interface, touch operation, operation steps prompt;

2) operation mode: full touch screen operation, one-click test, low operation requirements for users, simple software interface, easy to use, easy to learn and use;

3) software flexibility, high reliability: the product has computer software copyright and product registration certificate, Android system, built-in sample data Library, sample

product information entry is rich and flexible, and various information such as the name of the test sample, the place of origin, the inspection unit, and the test time can be directly entered.

4) Detection data information collection function: collection of information items (including but not limited to): inspector, test sample name, test time, test items,

test results, all test data information can be uploaded to the network monitoring platform after the test is completed

5) Data processing is convenient and flexible: test data can be transmitted and shared through the network, which is convenient for centralized monitoring and analysis of data and the construction of the regulatory platform in the administrative area

;

6) test items are scalable: the instrument can be automatically upgraded remotely, and the test items can be customized according to user request;

7) Provide complete accessory configuration, using beautiful and durable aluminum alloy toolbox, which is convenient for users to operate in fixed or mobile laboratories