The product is a simple and rapid organophosphorus (OP) compound detection system as shown in Figure 1.0. The detection is based on colorimetric method which incorporated with image processing technique. Obvious color change can be observed after…

The present invention discloses a method of preparing a controlled-release nitrogen, phosphorus and potassium (NPK) compound fertilizer. The method comprises steps of preparing a PLA biopolymer at a predefined concentration between 5-15 %w/v by…