Kandungan Logam Berat Pb Pada Kol dan Tomat di Beberapa Kecamatan Kabupaten Karo: Heavy Metal Pb Content In Cabbage And Tomatoes In Several Districts Of Karo Regency

Penelitian bertujuan untuk mengetahui kandungan logam berat Pb daun kol dan buah tomat di tiga Kecamatan Kabupaten Karo yaitu Kecamatan Simpang Empat, Kabanjahe dan Tiga Panah. Analisis tanaman dilakukan di Laboratorium Pusat Penelitian Kelapa Sawit (PPKS) Medan, pada bulan April - Mei 2016, menggunakan Rancangan Acak Kelompok (RAK) faktorial dengan 3 ulangan. Faktor pertama jenis tanaman yaitu: daun kol dan kulit buah tomat, faktor kedua jarak dari jalan raya yaitu 5 m dan 10 m serta faktor ketiga adalah pencucian yaitu tanpa dicuci dan dicuci dengan air mengalir. Parameter yang diamati kandungan logam berat Pb pada daun tanaman kol dan kulit buah tanaman tomat. Hasil penelitian menunjukkan bahwa jenis tanaman, jarak dari jalan raya dan pencucian berpengaruh terhadap kadar Pb. Kadar Pb daun kol pada jarak 5 m dan 10 m tanpa pencucian masing-masing 6,19 ppm dan 4,79 ppm dan dengan pencucian 4,48 ppm dan 3,86 ppm. Sedangkan kadar Pb pada buah tomat pada jarak 5 m dan 10 m tanpa pencucian 4,01 ppm dan 3,10 ppm dan dengan pencucian 3,08 ppm dan 2,26 ppm.   This research is aims to find out the content of heavy metals Pb on cabbage leaf and plum tomatoes in three districts of Karo Regency, those are Simpang empat, Kabanjahe and Tiga Panah district. The plant analysis have held in the laboratory of oil palm Research Centre (PPKS), at April-May 2016, using Random Design Group (RAK) factorial with three replications. The first factor is the type of plants: cabbage leaf and fruit skins of tomato, the second factor is the distance from the highway, namely the 5 m and 10 m and the third factor is the leaching that is without being washed and washed with flowing water. The parameters observed are heavy metal Pb content in the leaves of the plant and fruit skins cabbage tomato plants. The results showed that the type of plant, the distance from the highway and the leaching effect on levels of Pb. The levels of Pb on cabbage leaf at a distance of 5 m and 10 m without washing each 6.19 ppm and 4.79 ppm and with leaching 4.48 ppm and 3.86 ppm. While the levels of Pb on tomato fruit at a distance of 5 m and 10 m without leaching 4.01 ppm and 3.10 ppm and with leaching 3.08 ppm and 2.26 ppm