題組內容

四、Over the past years, new psychoactive substances (NPS)have continued to be rampant and even disguised as instant coffee or milk tea powder, which endangers the physical and mental health of our countrymen. With the advancement of technology, there are many different detection methods for suspected drugs found by police officers on duty. Please illustrate the features of the following three methods, and explain the significance of their positive test results

(一)Color test(8 分)