Quantitative analysis of lead, cadmium, and zinc concentrations in Ipomoea aquatica F. (kangkong), water and sediments in Barangay Arkong Bato, Valenzuela, Metro Manila

• Main Authors: Rivera, Donna I., Santos, Francis Mark D.
• Format: text
• Language: English
• Published: Animo Repository 1997
• Subjects: Ipomoea aquatica—Heavy metal content; Water—Composition; Sediments (Geology)—Heavy metal content
• Online Access: https://animorepository.dlsu.edu.ph/etd_bachelors/4118
• Institution: De La Salle University

Ipomoea aquatica (kangkong), water, and sediment samples in Bgy., Arkong Bato, Valenzuela, Metro Manila were analyzed for the presence of lead, cadmium, and, zinc using the Atomic Absorption Spectrophotometer (AAS). Samples were collected from June to August 1996. Using one-way ANOVA, certain ecological determinants like the light intensity (ft candle), temperature (Celsius), transparency (cm), pH, and, the salinity (o/oo) showed significant (0.05 level, F-test) differences. Lead concentrations in kangkong were significantly (0.05 level, F-test) different per collection. Lead concentrations in kangkong were found significant (0.05 level, F-test) per collection and per station. Zinc concentrations in kangkong, water, and, sediments were also significant (0.05 level, F-test) per collection. Based on the gathered data, the amount of Pb, Cd, and Zn in kangkong was above the World Health Organization recommended limit for food of 0.05 mg/L, 0.01 mg/L, and 1.5 mg/L respectively. Therefore, kangkong plants growing in Arkong Bato are not safe for consumption.