TOKSISITAS AKUT (LC50) SERBUK BOR (Cuttings) TERHADAP Daphnia sp.

  • Hefni Effendi Pusat Penelitian Lingkungan Hidup (PPLH), IPB
  • Aditya Herry Emawan Laboratorium Produktivitas dan Lingkungan Perairan, Departemen Manajemen Sumberdaya Perairan, FPIK, IPB
  • Yusli Wardiatno Laboratorium Produktivitas dan Lingkungan Perairan, Departemen Manajemen Sumberdaya Perairan, FPIK, IPB
  • Majariana Krisanti Laboratorium Produktivitas dan Lingkungan Perairan, Departemen Manajemen Sumberdaya Perairan, FPIK, IPB

Abstract

Research was aimed at determining toxicity of drilling cuttings towards Daphnia, revealed in LC50 96 hours, meaning that cuttings concentration cause 50% population of Daphnia within the period of 96 hour observation. LC50 96 hour is utilized for preliminary strategy of managing drilling cuttings. Static test was applied at the main bioassay experiment.  Mortality was as an indicator of toxicity.  Bioassay experiment refers to US-EPA (1991, 1996, 2002); Ziehl and Schmitt (2000).  Mortality and water quality fluctuation were observed at hours 2, 4, 6, 8, 24, 48, 72, and 96. Determination of LC50 96 hour was carried out by the method of Probit Analysis.  Manual count and software EPA Probit Analysis Version 1.5 were applied. LC50 96 hours cuttings towards Daphnia is 22.177 - 22,208 ppm.  This indicates that cuttings has almost non-toxic characteristic.  However, disposal of these cuttings needs oil content measurement.  If oil content meets regulation (? 10%), cuttings is allowed to be discharged to the surrounding terrestrial environment.

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Published
2012-08-01
How to Cite
EFFENDI, Hefni et al. TOKSISITAS AKUT (LC50) SERBUK BOR (Cuttings) TERHADAP Daphnia sp.. Bumi Lestari, [S.l.], v. 12, n. 2, aug. 2012. ISSN 2527-6158. Available at: <https://ojs.unud.ac.id/index.php/blje/article/view/4823>. Date accessed: 26 apr. 2024.
Citation Formats
Issue
Vol 12 No 2 (2012)
Section
Original Research Articles

Keywords

Toxicity; Daphnia; Cuttings; LC50 96 hour

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