Pesticides and heavy metals in sediment core samples from a coastal area in Japan

This study was aimed to assess the severity of heavy metal contamination in eastern coastal area of Pakistan. Agriculture lands near district Badin coastal area found contaminated due to mega surface canal drain network, carrying untreated industrial and municipal effluents along with pumped saline water. Thirty-two random soil samples were collected from different coastal areas. Arc Geographic Information System was used for spatial mapping. Soil samples from coastal areas of Badin contain average concentrations of heavy metals (mg/kg) as Hg 0.247±0.207, Ni 2.622±1.107,Zn 3.121±0.929, Cu 0.059±0.066, Fe 70.447±1.163, Mn7.062±1.251, Co 0.0167±0.033,Cr0.799±0.718.

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Cold Active Amylases Producing Psychrotolerants Isolated from Nella Lake, Antarctica

Biosciences Biotechnology Research Asia ◽

10.13005/bbra/2603 ◽

2018 ◽

Vol 15 (1) ◽

pp. 05-16

Author(s):

Abhas Kumar Maharana ◽

Shiv Mohan Singh

Keyword(s):

Sediment Core ◽

Yeast Extract ◽

Submerged Fermentation ◽

Soluble Starch ◽

East Antarctica ◽

Core Samples ◽

Larsemann Hills ◽

Amylase Production ◽

Cold Active ◽

Food And Beverage

Cold active amylase was investigated by bacteria and yeast isolates from the sediment core samples of Nella Lake,Larsemann Hills region, East Antarctica. Between potential yeast and bacteria isolates screened for amylases, best isolates were identified asRhodotorula sp. Y-37 and ArthrobacteralpinusN16 by molecular technique.Amylase production capabilities of both the isolate subjected for optimization processes by using submerged fermentation technique with soluble starch as substrate.The results indicate that a supplement of 1% w/v glucose, 1% w/v yeast extract and 0.1% w/v KCl at pH 7.0with 5% v/v inoculum enhances the amylase production by 5.72-fold using Rhodotorula sp. Y-37. In other hands, the activators are 1% w/v of galactose and peptone, 0.1% w/v KCl and 2.5% v/v inoculum at pH 7.0 enhances the amylase production by 3.74-fold using ArthrobacteralpinusN16. Cold-active amylasecan be used in detergent, textile, food and beverage industries. Bio-degradation of starchy materials by cold active amylases can contribute in cleaning of environment at cold regions without harming the climate.

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Oxygen profiles from sediment core samples collected in the back barrier island bays on Virginia’s Eastern Shore in July 2017

Biological and Chemical Oceanography Data Management Office ◽

10.1575/1912/bco-dmo.745987.1 ◽

2018 ◽

Author(s):

David Burdige ◽

Matthew Long ◽

Richard Zimmerman

Keyword(s):

Sediment Core ◽

Barrier Island ◽

Eastern Shore ◽

Core Samples ◽

Oxygen Profiles

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Studi Kandungan Logam Berat Merkuri (Hg) dan Prediksi Kandungan Metil Merkuri (CH3Hg) pada Organ Kerang Darah (Anadara granosa) di Kecamatan Sidayu dan Kecamatan Banyuurip, Pantai Utara Gresik, Jawa Timur [Study of Heavy Metal Content of Mercury (Hg) and Prediction Content of Methyl Mercury (CH3Hg) on The Blood Shellfish’ (Anadara granosa) Organs In Sidayu and Banyu Urip District, Gresik, East Java]

Jurnal Ilmiah Perikanan dan Kelautan ◽

10.20473/jipk.v6i2.11310 ◽

2019 ◽

Vol 6 (2) ◽

pp. 207

Author(s):

Baskara Adam Saleh, Boedi Setya Rahardja, Muhammad Arief

Keyword(s):

Heavy Metals ◽

Coastal Area ◽

Methyl Mercury ◽

Industrial Effluent ◽

River Estuary ◽

Mercury Contamination ◽

Filter Feeder ◽

Average Value ◽

Blood Clam ◽

Anadara Granosa

Abstract Oil drilling and industrial effluent that wasted through the Bengawan Solo River estuary is a source of environmental pollution in the Sidayu and Banyu Urip district, Gresik as one that produces the blood shellfish (Anadara granosa). One of the most dangerous contaminants of heavy metals is mercury. However shellfish can accumulate more heavy metals than other aquatic animals because it settle and filter their food (filter feeder) and slow to be able to avoid the effects of pollution The Aim of this study are to determine the levels of mercury and methyl mercury predictions on blood shellfish (Anadara granosa). The process of sampling was done at coastal area of Sidayu and Banyu Urip district, Gresik then performed using Atomic Absorbance readings Spectrophotometric (AAS). This is a descriptive study and the data obtained, and then continued with stoichiometric calculations to predict the content of methyl mercury. Based on the analysis of mercury and prediction of methyl mercury in the blood shellfish (Anadara granosa) organs in coastal area of Sidayu and Banyu Urip district, Gresik, has not exceeded the threshold of SNI, the value is 0.5 ppm. Mercury contamination was high in blood clam shell with the average value of 0.273 ppm and 0.293 ppm, followed by the stomach and intestines shell with an average value of 0.226 ppm and 0.281 ppm. Lowest contamination is on the organ gill, liver, and kidneys with the average value of 0.150 ppm and 0.133 ppm.

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