PERBANDINGAN PENURUNAN KADAR CADMIUM (Cd) PADA KERANG DARAH (Anadara granosa) DENGAN PERENDAMAN LARUTAN JERUK NIPIS (Citrus aurantifolia) PADA BERBAGAI KONSENTRASI DAN LAMA PERENDAMAN
Abstract: The Comparison of
Cadmium (Cd) Content Reduction on Blood Cockle (Anadara granosa) by Soaking in
Lime Acid (Citrus aurantifolia) Solution in Various Concentrate and Time
Soaking. Blood cockle (Anadara granosa) can accumulate heavy metal which can
endanger human organ through food chain. The most frequently heavy metal found
in blood cockle is Cadmium (Cd). To reduce Cd content, it can be soaked by lime
acid solution (Citrus aurantifolia).The aim of
this study was to compare the reduction of Cd on blood cockle by soaking
in lime acid solution in various concentration and time soaking. This research
was experiment research with a Completely Randomized Design. The concentration
of lime acid consisted of 3 levels (0%, 25%, and 50%) and soaking time
consisted of 2 levels, namely 15 minute and 30 minute. To compare the level of
Cd decreased in each treatment performed two-way anova with α =0,05. Based on
research results, Cd levels before treatment was 1,20632 ppm, higher than the
threshold limit value recommended by SNI No.7387: 2009 (1 ppm). There were
reduction of Cd in every treatment. There are significantly difference of Cd
reduction between soaking time 15 minute (0,6751±0,0894 ppm) and 30 minute
(0,897±0,1745 ppm). The reduction of Cd is also significantly different (p =
0,001 ppm) between concentration 0% (0,5896 ± 0,0268 ppm) and 25% (0,8279 ±
0,157 ppm), and so is concentration 0% (0,5896 ± 0,0268 ppm) and 50% (0,8546 ±
0,097 ppm) (p = 0,001). It can be concluded that blood cockle which had been
taken in Belawan river has been polluted by Cd. The most optimal concentration
to reduce Cd is 25% with soaking time 30 minute (80,25%). It is suggested for
other researcher to examine the nutrient value of blood cockle which has soaked
by lime acid solution.
Penulis: Delvina Sinaga,
Irnawati Marsaulina, Taufik Ashar
Kode Jurnal: jpkesmasdd130185
