What is the heavy metal cadmium colloidal gold rapid detection card?

Heavy metal cadmium is a heavy metal element that is extremely harmful to human health. Long-term intake may cause kidney damage, skeletal lesions and even cancer. Therefore, rapid and accurate detection of cadmium content in food, environmental and other samples is essential. The heavy metal cadmium colloidal gold rapid detection card is an efficient detection tool developed based on colloidal gold immunochromatography technology, which can complete the qualitative or semi-quantitative analysis of cadmium ions in a short time.

This detection card is mainly composed of sample pad, binding pad, reaction film and absorbent paper. The binding pad is pre-coated with cadmium antibodies labeled with colloidal gold, and the reaction film is fixed with cadmium antigens and quality control line antibodies. During detection, the sample is added dropwise to the sample pad, and the sample will drive the colloidal gold marker to migrate towards the absorbent paper. If there are cadmium ions in the sample, it will bind to the cadmium antibody labeled with colloidal gold, preventing it from binding to the cadmium antigen on the reaction film, resulting in the detection line not showing color; on the contrary, the detection line shows color, and the cadmium content can be judged by comparing the color depth with the standard colorimetric card.

Compared with traditional detection methods (such as atomic absorption spectrometry), the cadmium colloidal gold rapid detection card has significant advantages: the detection speed is fast, and it only takes 10-15 minutes to produce results; the operation is simple, no professional training and complex equipment are required, and it is suitable for on-site rapid screening; the cost is low, and it is suitable for large-scale sample detection; the sensitivity is high, and cadmium ions as low as micrograms can be detected.

In application scenarios, the test card is widely used for cadmium content screening in food fields (such as rice, vegetables, aquatic products, dairy products, etc.), and can also be used for rapid monitoring of environmental samples such as drinking water and soil. It can help regulatory authorities, enterprises and individuals quickly identify risk samples of cadmium exceeding standards, and provide strong support for food safety supervision and health risk prevention and control.

In short, the heavy metal cadmium colloidal gold rapid test card has become an important tool in the field of food safety testing due to its high efficiency, convenience and economy. It plays an irreplaceable role in protecting the public's "safety on the tip of the tongue".