Dwi Hindarti, Dwi
Unknown Affiliation

Published : 12 Documents
Articles

Found 2 Documents
Search
Journal : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

Toxicity of Cadmium (Cd) and Copper (Cu) on Growth of Microalgae Isochrysis galbana and chlorophyll- a Content Sembiring, Herbin; Nurrachmi, Irvina; Hindarti, Dwi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRACT The research was conducted from Mei until June 2019 at the Laboratory of Marine Chemistry and Ecotoxicology, Research Center of Oceanography, Indonesian Institute of Sciences, Jakarta. The purpose of this research was to determine the 96-h IC50, LOEC, NOEC and the chlorophyll-a content after the exposure of cadmium and copper  to microalgae I. galbana. The result showed that  the response due to the treatmeant given is not from the influence of water quality parameters, the 96-h IC50 value of cadmium and copper for growth of I. galbana was  1.3706mg/l and 0.0117 mg/l,  respectively the LOEC cadmium and copper was 0.32 mg/l and 0.0056 mg/l, the NOEC cadmium and copper was <0.32 mg/l and<0.0056 mg/l. Based on data IC50, cooper was more toxic than cadmium to the microalgae I. galbana. The chlorophyill-a content correlates with the percent decrease in microalgae cell density. Keyword :IC50, LOEC, NOEC, I. galbana, Toxicyty
GROWTH OF Chlamydomonas sp. AS A PRELIMINARY STEP ON THE METAL TOXICITY TESTING Siahaan, Yoshua Nobel; Budijono, Budijono; Hindarti, Dwi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRACT             This study is aimed to learn the capabilities of Chlamydomonas sp. as biota qualifies for metal toxicity test. This research is done for 17 days by seeing an entire living phase of Chlamydomonas sp. in the growth curve. A cell density analysis from Chlamydomonas sp. calculated using a microscope.This result indicate that there are 4 living phases of Chlamydomonas sp. it?s composed of phases lag, an exponential phase, stationary phases and phases leading to death. Chlamydomonas sp. qualified as a test biota for a heavy metal toxicity test using phytoplankton according to Asean-Canada Cooperative Programme on Marine Science Phase II. This is seen from the growth of cell density that exceeds the minimum limit on the 4th day of inoculation growth curve or at the beginning of an exponential phase with density of cell 3,68 x 104 cell.mL-1.Kata Kunci : Phytoplankton, Chlamydomonas sp., Toxicity test