Analisis KadarTimbal (Pb) pada Kubis (Brassica oleraceae L.) dari Sentra 2 Kecamatan Kabupaten Malang menggunakan Metode Destruksi Basah Tertutup (Refluks) secara Spektroskopi Serapan Atom (SSA)

Abstract

Kubis yang ditanam dipinggir jalan memungkinkan terpapar polusi asap kendaraan. Penelitian ini bertujuan untuk mengetahui kadar timbal (Pb) pada sampel kubis. Pengambilan sampel dilakukan dengan variasi jarak (10, 20, 30 meter) dan perlakuan sampel (tanpa pencucian, pencucian, perendaman, perebusan). Sampel di refluks dengan zat pengoksidasi HNO₃ + H₂SO₄ (3:1) dianalisis secara Spektroskopi Serapan Atom (SSA). Hasil kadar logam timbal dalam sayuran kubis di Kecamatan Ngantang dan Kecamatan Pujon jarak 10 meter > 20 meter > 30 meter dan kadar logam timbal perlakuan tanpa pencucian > pencucian > perendaman > perebusan. Berdasarkan hasil uji statistika two way ANOVA didapatkan nilai sig < 0.005 dan F_hitung > F_tabel yang menunjukkan bahwa variasi jarak dan perlakuan sampel berbeda nyata serta berpengaruh secara signifikan terhadap kadar logam timbal (Pb).

Cabbage planted on the side of the road may be exposed to vehicle exhaust pollution. This research aims to determine lead (Pb) levels in cabbage samples. Sampling was carried out at varying distances (10, 20, 30 meters) and sample treatment (without washing, washing, soaking, boiling). Samples refluxed with the oxidizing agent HNO₃ + H₂SO₄ (3:1) were analyzed using Atomic Absorption Spectroscopy (AAS). Results of lead metal levels in cabbage vegetables in Ngantang District and Pujon District, a distance of 10 meters > 20 meters > 30 meters and metal levels of treated tubs without washing > washing > soaking > boiling. Based on the results of the two way ANOVA statistical test, the sig value was < 0.005 and Fcount > Ftable, which shows that variations in distance and sample treatment were significantly different and had a significant effect on lead (Pb) levels.