Bioakumulasi Logam Berat Timbal (Pb) dan Hubungannya dengan Laju Pertumbuhan Ikan Mujair (Oreochromis mossambicus)
Submission Date: 2013-08-15 10:00:47
Accepted Date: 2013-09-01 00:00:00
Abstract
Penelitian ini bertujuan untuk mengetahui bioakumulasi logam berat timbal (Pb) dan hubungannya dengan laju pertumbuhan ikan Mujair (Oreochromis mossambicus). Penelitian ini meliputi uji pendahuluan penentuan konsentrasi PbCl2, persiapan ikan uji, uji AAS (Atomic Absorbtion Spectrophotometry), pengamatan pertumbuhan ikan dengan parameter yang diamati adalah panjang dan berat ikan.Hasil uji pendahuluan penentuan konsentrasi PbCl2 diperoleh nilai LC5096jamsebesar 313,232 mg/L. Variasi konsentrasi yang digunakan adalah 0%; 2,5%; 5%; dan 10% dari LC5096jam. Konsentrasi timbal (Pb) dan hari paparan mempengaruhi konsentrasi timbal (Pb) pada daging ikan dengan nilai p pada uji ANOVA two – way adalah 0,000 dan konsentrasi yang paling berpengaruh adalah konsentrasi 10%LC5096jam pada hari paparan ke – 30. Terkait laju pertumbuhan ikan semakin besar konsentrasi yang digunakan dan semakin lama paparan timbal, maka laju pertumbuhan (laju pertumbuhan spesifik dan laju pertumbuhan panjang harian ) menurun, sedangkan setelah dilakukan uji ANOVA one – way menurunnya laju pertumbuhan spesifik dan laju pertumbuhan panjang harian ternyata tidak dipengaruhi oleh kandungan logam berat timbal (Pb) yang ada di dalam daging ikan. Hal ini dapat diketahui dari nilai p uji ANOVA one – way pada laju pertumbuhan spesifik (SGR) adalah 0,453 dan nilai p pada laju pertambahan panjang harian sebesar 0,223
Keywords
daging; Oreochromis mossambicus; PbCl2; konsentrasi; Laju pertumbuhan
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