The concentration of heavy metals such as Pd, Cd, Cu and Cr were studied using AAS on vegetable samples such as Tomato (fruit and leaf) and Onion bulb. Trace element as Cu showed high concentration. The concentration of heavy metal like Cu ranged from of 0.155 to 0.024mg/kg in tomato fruit; 0.120 to 0.057mg/kg in leafy tomato; 0.118 to 0.121mg/kg in onion bulb which were more than the maximum permissible limit according to the International organization like FAO and WHO. The concentration of Cd for the vegetable samples ranged from 0.013 to 0.005mg/kg in tomato fruit; 0.015 to 0.027mg/kg in leafy tomato; 0.005 to 0.006mg/kg in onion bulb which were below the permissible limit. The concentration of the remaining heavy metals as Cr ranged from 0.506 to 0.568mg/kg in tomato fruit; 0.610 to 0.567mg/kg in leafy tomato; 0.510 to 0.608mg/kg in onion bulb respectively and Pb ranged within 0.175 to 0.219mg.kg in tomato fruit; 0.080 to 0.021mg/kg in leafy tomato; 0.102 to 0.064mg/kg in onion bulb respectively were within the permissible limit as compared with the (FAO/WHO, 2001). The high level of Copper (Cu) in vegetable samples, are suspected for liver and kidney damage, anemia and many more health risks. Samples selected for the study are highly contaminated with Cu which may possess a major health concern from the research.
KEYWORDS: Heavy metals, Vegetables, health risks, FAO/WHO limits, Tomato (fruit and leaf), Onion bulb, Contamination, Permissible limits.TABLE OF CONTENTS
LIST OF FIGURES
Figure: 4.1 Mean concentrations of copper in vegetable samples……………………….28
Figure 4.2: Mean concentrations of cadmium in vegetable samples…………………….29
Figure 4.3: Mean concentrations of chromium in vegetable samples…………………...30
Figure 4.4: Mean concentrations of Pb in vegetable samples…………………………...31
Figure 4.5: Comparison of mean concentrations of heavy metals in vegetable samples.32 (tomato fruits, tomato leaves and onion bulbs) with FAO/WHO standard limits.
Mbah, B. (2018). DETERMINATION OF SOME SELECTED HEAVY METALS IN TOMATO (FRUITS AND LEAVES) AND ONION BULBS COLLECTED FROM HUNKUYI ROADSIDE FARMS, ZARIA.. Afribary. Retrieved from https://afribary.com/works/determination-of-some-selected-heavy-metals-in-tomato-fruits-and-leaves-and-onion-bulbs-collected-from-hunkuyi-roadside-farms-zaria
Mbah, Basil "DETERMINATION OF SOME SELECTED HEAVY METALS IN TOMATO (FRUITS AND LEAVES) AND ONION BULBS COLLECTED FROM HUNKUYI ROADSIDE FARMS, ZARIA." Afribary. Afribary, 15 Mar. 2018, https://afribary.com/works/determination-of-some-selected-heavy-metals-in-tomato-fruits-and-leaves-and-onion-bulbs-collected-from-hunkuyi-roadside-farms-zaria. Accessed 02 Aug. 2021.
Mbah, Basil . "DETERMINATION OF SOME SELECTED HEAVY METALS IN TOMATO (FRUITS AND LEAVES) AND ONION BULBS COLLECTED FROM HUNKUYI ROADSIDE FARMS, ZARIA.". Afribary, Afribary, 15 Mar. 2018. Web. 02 Aug. 2021. < https://afribary.com/works/determination-of-some-selected-heavy-metals-in-tomato-fruits-and-leaves-and-onion-bulbs-collected-from-hunkuyi-roadside-farms-zaria >.
Mbah, Basil . "DETERMINATION OF SOME SELECTED HEAVY METALS IN TOMATO (FRUITS AND LEAVES) AND ONION BULBS COLLECTED FROM HUNKUYI ROADSIDE FARMS, ZARIA." Afribary (2018). Accessed August 02, 2021. https://afribary.com/works/determination-of-some-selected-heavy-metals-in-tomato-fruits-and-leaves-and-onion-bulbs-collected-from-hunkuyi-roadside-farms-zaria