Assessment of Hg in Holothuria (Mertensiothuria) leucospilota (Brandt, 1835) from Karachi coasts, Pakistan
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Tarih
2020
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Kahramanmaras Sutcu Imam Univ Rektorlugu
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The aim of the present study was to determine mercury levels in sediments, surface sea water and Holothuria leucospilota muscles and skin in two selected sites from Karachi coast. Samples were collected during two seasons south-west monsoon (August-September) and north-east monsoon (December-January). The concentrations of Hg in sediment ranged from 0.0012 to 0.0023 mg kg(-1), and in surface water from 0.00018 to 0.00034 (mu g l(-1)), while in muscle and skin of black sea cucumber ranged from LOD to 0.0034 and LOD to 0.0046 mg kg(-1) dry wt., respectively. Moreover, Hg showed the highest accumulation rate in the skin tissue with BSAF values ranging between 2 in Buleji and 2.69 in Sunehri at north-east monsoon. The BSAF values in the muscles of the black sea cucumber ranged from 1.44 at south-west monsoon in Buleji to 1.63 at north-east monsoon in Sunehri, respectively. Since BSAF value is higher than 2 on the skin of sea cucumber, it is evaluated as macro-concentrator. However, the BSAF value varies between 1 and 2 in muscle, it has been determined as micro-concentrator. Hg in the black sea cucumbers from Buleji and Sunehri sites of the Karachi coasts is very bio-accumulative (BCF > 5000) during both sampling seasons.
Açıklama
Anahtar Kelimeler
Mercury, Holothuria leucospilota, Karachi, Pakistan, Arabian Sea
Kaynak
Ksu Tarim Ve Doga Dergisi-Ksu Journal of Agriculture and Nature
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
Cilt
23
Sayı
6
