Rice Heavy Metal Detector

I. Product Overview

The anodic stripping voltammetry heavy metal analyzer (grain heavy metal rapid tester) is a high-precision electrochemical analysis device for detecting the heavy metals lead and cadmium in grain samples such as rice and brown rice. Using disposable three-electrode strips with the anodic stripping voltammetry method, together with screen-printed electrode consumables and a simple sample pre-treatment process, it enables rapid quantitative detection of heavy metals such as lead and cadmium. It is suitable for grain safety, food safety and rapid market-supervision testing, among other scenarios.

II. Detection Principle

It adopts the anodic stripping voltammetry method, with the following workflow: Pre-treatment: the sample is crushed and extracted with an extraction solution to dissolve heavy metal ions (e.g., Cd²⁺, Pb²⁺). Enrichment: a negative voltage is applied so that metal ions are reduced and enriched on the surface of the working electrode. Stripping: a reverse scanning voltage is applied; the enriched metal is re-oxidized and stripped, producing a characteristic 'stripping peak'. Quantification: the peak potential is used for qualification and the peak current for quantification, with the content calculated by comparison against a standard curve.

III. Applicable Standards

JJF 2037-2023 Calibration Specification for Portable Anodic Stripping Voltammetry Heavy Metal Detectors;

GB 2762-2022 National Food Safety Standard — Maximum Levels of Contaminants in Foods;

T/GXAGS 010-2025 Rapid Simultaneous Determination of Cadmium and Lead in Rice — Anodic Stripping Voltammetry.

IV. Applications

Grain safety: rapid determination of heavy metals in grain and its processed products such as rice, paddy, wheat and corn. Food safety: detection of heavy metals in food such as vegetables, fruits, aquatic products and dairy products.

V. Key Features

1. Android system with a 7-inch color touch all-in-one operation.

2. Based on anodic stripping voltammetry, sensitivity is far higher than traditional colorimetry or X-ray fluorescence, enabling accurate quantification.

3. Simplified and unified pre-treatment: one extraction simultaneously detects multiple items such as lead and cadmium.

4. Single-sample full-process detection time ≤ 20 min; the stripping voltammetry curve is displayed in real time after loading.

5. ★ Magnetic elastic-contact electrode seat for convenient electrode replacement while avoiding wear, with stable connection (patented technology).

6. Disposable three-electrode strips, use-and-discard, no polishing required, avoiding cross-contamination and being friendly to operators and the environment.

7. Cadmium and lead detection as standard; can be expanded/upgraded to arsenic, mercury, copper, chromium, zinc, etc. as required.

8. Historical data can be stored locally and uploaded to a platform wirelessly; built-in high-speed thermal printer supports real-time printing of results.

9. ★ Can be connected to Wi-Fi for remote software upgrade.

VI. Technical Parameters