Pendeteksian Gas Amonia (NH3) di Lahan Persawahan Berbasis Internet of Things (IoT) dan Dampaknya Terhadap Kesehatan Masyarakat di Daerah Pangkalan Susu

Abstract

When nitrogen fertilizer is used in agricultural activities, ammonia gas (NH3) emissions increase, which has a negative impact on the health of the surrounding community. The purpose of this research is to develop an NH3 monitoring system in Pangkalan Susu Village, North Sumatra, that uses the Internet of Things (IoT). To send data to the Blynk application in real-time, this system uses an MQ-135 sensor connected to an Arduino Mega 2560 and a SIM800L GSM module. After calibration was performed with a standard AR8500 device, an average accuracy of 97.48% was obtained. The measurement results showed that the NH3 concentration reached 5.25 ppm, exceeding the threshold of 2.00 ppm. In addition, a public health survey was conducted by sending questionnaires to two groups of respondents: farmers and non-farmers. The analysis results showed that exposure to NH3 caused significant health symptoms. The system also serves as an early monitoring tool to detect air pollution and support efforts to reduce and protect public health in rice fields