PENGARUH PENGOLAHAN DAUN KANGKUNG DARAT (Ipomoea reptans Poir) TERPAPAR POLUTAN KENDARAAN BERMOTOR TERHADAP KADAR LOGAM BERAT (Pb) SEBAGAI BAHAN PENYUSUNAN LKPD TOPIK PENCEMARAN LINGKUNGAN

Abstract

Kangkung plant is a food that contains lots of vitamins and minerals, but if the vegetable plants are in an area exposed to motor vehicle pollutants, it will affect the nutritional value in vegetables. The purpose of this study was to empirically prove the effect of processing the leaves of land kangkung (Ipomoea reptans Poir) on Pb levels as a material for preparing student worksheets. The research population is land kangkung in North Metro District. The research sample in the form of kale as much as 1600 grams taken at random. North data collection in the form of Pb levels were analyzed chemically in the chemical laboratory of the University of Muhammadiyah Malang. Data analysis was carried out descriptively and parametric statistics using One-Way Variance Analysis calculated with SPSS software version 16.0 for windows. The results of the study concluded that: First, the method of processing land kale leaves in the form of fresh, boiled, steamed, and sauteed gave different results in decreasing Pb levels, and second, Preparation of student worksheet materials from the results of research on the effect of processing water spinach leaves. land to Pb levels has two process dimensions, namely: the scientific process dimension from the measurement results and the scientific process dimension from the observation or documentation. The development of student worksheets is focused on the results of the experiment. The guiding systematics are at least in the form of: experimental guide, analysis guide, conclusion guide, and evaluation guide.