UJI BANDING METODA PELINDIAN LOGAM KROM CARAROTARY AGITATOR DENGAN ULTRASONIC
Abstract: A comparative test
of leaching procedure of the metal chromium (Cr) were conducted between Rotary
Agitator and Ultrasonic Cleaner by using certified soil reference materials
(CRM) lot number 118 097 APG having a true value of total chromium
concentration of 16.7 ± 0.333 mg/L which is used as an material comparison. The
result shown that a average concentration result of chromium leached test using
Rotary Agitator is 14,18 ± 0,3407 mg/L, and gave recovery 94,92 %. A while the
average concentration result of chromium leached test using Ultrasonic Cleaner
is 13,64 ± 0,118 mg/L, and gave recovery 91,68 %. Comparison study between
Rotary Agitator and Ultrasonic Cleaner equipments didn't shows any significant
difference, where tcomputed< ttabularwhich indicates the null hypothesis (HJ
is accepted with value a 95 %.
Penulis: Ardeniswan
Kode Jurnal: jpkimiadd110183
