手机内置摄像头比色法监测室内甲醛  

Mobile Phone Built-in Camera Colorimetric Method to Monitor Indoor Formaldehyde

作　　者：邓加元 Deng Jiayuan(ShanghaiKangweidi Testing Co.,Ltd.Shanghai 210800,China)

机构地区：[1]上海康卫迪检测有限公司,上海210800

出　　处：《绿色科技》2024年第4期204-208,共5页Journal of Green Science and Technology

摘　　要：通过集成一种新型甲醛比色检测器和手机内置摄像头功能,提出了一种简单的室内空气污染监测系统。比色检测器使用由4-氨基-3-肼基-5-巯基-1,2,4-三唑、ZnO、KIO_(4)和琼脂制成的固相比色试剂,并通过暴露于甲醛气体而将颜色从白色变为紫色、红色、绿色和蓝色,根据颜色变化程度测定室内环境中甲醛的浓度水平。检测器经24 h空气暴露后的定量限为0.011 mg/m^(3),符合世界卫生组织制定的室内空气质量甲醛检测方法的要求。该探测器通过使用各种手机和改变摄影条件来研究获得的照片图像的变化,用颜色标准对测量的颜色强度进行校准,从而提高了监测结果的稳定性。A simple indoor air pollution monitoring system is proposed by integrating a new formaldehyde colorimetric detector and a built-in camera function in mobile phones.The colorimetric detector uses a solid-phase colorimetric reagent made of 4-amino-3-hydrazino-5-mercapto-1,2,4-triazole,ZnO,KIO_(4),and agar,and changes the color from white to purple,red,green,and blue by exposure to formaldehyde gas.The concentration level of formaldehyde in the indoor environment is determined based on the degree of color changes.The quantitative limit of the detector after 24 hours of air exposure is 0.011 mg/m^(3),which meets the requirements of the formaldehyde detection method for indoor air quality formulated by the World Health Organization.This detector studies the changes in the obtained photo images by using various mobile phones and changing photography conditions,and calibrates the measured color intensity with color standards,thereby improving the stability of monitoring results.

关 键 词：甲醛 比色法 手机摄像头 室内环境监测 

分 类 号：X831[环境科学与工程—环境工程]