Study of organochlorine pesticide residues in water, sediment and fish tissue in Lake Ohrid (Macedonia/Albania)

2011 ◽  
Vol 30 (2) ◽  
pp. 163 ◽  
Author(s):  
Elizabeta Veljanoska-Sarafiloska ◽  
Momčula Jordanoski ◽  
Trajče Stafilov ◽  
Marina Stefova
Keyword(s):  
Organochlorine Pesticides ◽  
Fish Tissue ◽  
Fish Biomass ◽  
Lake Ohrid ◽  
Fish Samples ◽  
Organochlorine Pesticide Residues ◽  
Potential Sources ◽  
Contamination Levels ◽  
River Mouths

A systematic study has been performed for determination of a range of organochlorine pesticides in the water, sediments and fish samples in the Macedonian part of the Lake Ohrid and its larger tributaries. The obtained results give an overview of the contamination levels of these problematic compounds (i) at their potential sources in the river mouths, (ii) in the potentially affected, species-rich littoral section of the lake, and (iii) in the muscle tissue of one selected fish species Barbus peloponnesius, Valenciennes, collected near the rivers’ deltas. The organochlorine pesticides measured in all three matrixes were: γ-HCH, ΣHCH (sum of α-isomer, β-isomer and δ-isomer), endosulfan (total of α and β endosulfan), DDT metabolites (p,p’-DDE, p,p’-DDD and p,p’-DDT). The range of the observed concentrations for p,p’-DDT was between 0.006 μg l–1 in the water samples from Daljan and St. Naum and 0.036 μg l–1 in the water from the Koselska River. The values for p,p’-DDT measured in dry sediment ranged from 0.121 μg kg–1 in the sample from St. Naum to 1.8 μg kg–1 in the dry sediment from the Velgoška River and between 0.553 μg kg–1 for total endosulfan and 5.982 μg kg–1 for p,p’-DDE of wet fish biomass. The most abundant of the detected organochlorine pesticides was the sum of DDT metabolic forms, i.e. p,p’-DDT, p,p’-DDE and p,p’-DDD. The detected concentrations are clearly below toxic thresholds and consequently severe effects on the endemic species of Lake Ohrid are not very likely.

scholarly journals DETERMINATION OF ORGANOCHLORINE PESTICIDE RESIDUES IN HUMAN MILK IN PIRACICABA, SP

2017 ◽  
Vol 36 (4) ◽  
pp. 21
Author(s):  
Rosana M.O. Freguglia ◽  
Graziela C. R. Moura Andrade ◽  
Valdemar Luiz Tornisielo
Keyword(s):  
Gas Chromatography ◽  
Human Milk ◽  
Organochlorine Pesticides ◽  
Solid Phase ◽  
Phase Extraction ◽  
Endosulfan Sulfate ◽  
Milk Samples ◽  
Organochlorine Pesticide Residues ◽  
Potential Impact

Worldwide, there is great concern with the issue of bioaccumulation of organochlorine compounds in human milk and their potential impact on health. Breastfeeding is recognized as essential for the proper development and protection of children’s health. In this study, we collected human milk samples from 40 donors in Piracicaba - SP, and analyzed to determine the levels of residues of organochlorine pesticides: hexachlorobenzene (HCB), lindane, heptachlor, aldrin, heptachlor epoxide, o,p’ DDE, a- endosulfan, p,p’ DDE, dieldrin, endrin, b-endosulfan, endosulfan sulfate, and methoxychlor. The analysis was performed by solid phase extraction (SPE) and quantification by gas chromatography using electron capture detector (ECD). Residues of organochlorine pesticides were detected in 65% of the donors evaluated.

scholarly journals Choline Chloride–Oxalic Acid as a Deep Eutectic Solvent–Based Innovative Digestion Method for the Determination of Selenium and Arsenic in Fish Samples

2018 ◽  
Vol 101 (4) ◽  
pp. 1183-1189 ◽  
Author(s):  
Abdul Haleem Panhwar ◽  
Mustafa Tuzen ◽  
Tasneem Gul Kazi
Keyword(s):  
Oxalic Acid ◽  
Choline Chloride ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Deep Eutectic Solvent ◽  
Absorption Spectrometry ◽  
Fish Tissue ◽  
Molar Ratio ◽  
Digestion Method ◽  
Fish Samples

Abstract An innovative and effective digestion method based on choline chloride (ChCl)–oxalic acid (Ox) deep eutectic solvent (DES) was proposed for the determination of Se and As in fish samples via electrothermal atomic absorption spectrometry (ETAAS). The impacts of different variables, including the composition and volume of ChCl–Ox, temperature, and acid addition, on analyte recovery were studied for optimization. In this procedure, an 80 mg sample was dissolved in a 1:2 molar ratio of ChCl–Ox at 105°C for 40 min, with the subsequent addition of 4.0 mL HNO3 (1.0 M) and further heating at the same temperature for about 5 min. Next, centrifugation was applied, and the supernatant solution was filtered, diluted to a known volume, and measured by ETAAS. The accuracy of the developed method was tested using a Standard Reference Material (NIST SRM 1946 Lake Superior Fish Tissue). The proposed DES-based digestion method was successfully applied to the simultaneous extraction of Se and As from fish samples.

Behavior of Chlorinated Naphthalenes in Analytical Methods for Organochlorine Pesticides and Polychlorinated Biphenyls

1971 ◽  
Vol 54 (1) ◽  
pp. 175-177
Author(s):  
Judith A Armour ◽  
Jerry A Burke
Keyword(s):  
Polychlorinated Biphenyls ◽  
Organochlorine Pesticides ◽  
Analytical Methods ◽  
Chromatographic Method ◽  
Silicic Acid Column ◽  
Chromatographic Determination ◽  
Industrial Chemicals ◽  
Organochlorine Pesticide Residues ◽  
Column Chromatographic

Abstract Chlorinated naphthalenes are industrial chemicals with properties similar to those of polychlorinated biphenyls (PCB); they are recovered from foods by analytical methods for multiple residues of organochlorine pesticides. The chlorinated naphthalenes may interfere with the gas chromatographic determination of several organochlorine pesticides. A silicic acid column chromatographic method previously developed to separate PCB from organochlorine pesticide residues, particulary DDT and its analogs, also separates chlorinated naphthalenes from the pesticides and permits GLC determination without interference.

Organochlorine Pesticides in Gallstones

1966 ◽  
Vol 12 (10) ◽  
pp. 697-700
Author(s):  
J H Simmons ◽  
J O'G Tatton
Keyword(s):  
Liquid Chromatography ◽  
Organochlorine Pesticides ◽  
Organochlorine Pesticide ◽  
Pesticide Residues ◽  
Gas Liquid Chromatography ◽  
Organochlorine Pesticide Residues ◽  
Benzene Hexachloride ◽  
The Individual

Abstract A method is described for the determination of organochlorine pesticide residues in human gallstones. The difficulty caused by the presence of large amounts of cholesterol in the stones is overcome by an acetylation step in the "clean-up" procedure, and the method finishes with identification and determination of the individual pesticides by gas-liquid chromatography. Results are given for 28 samples submitted by 2 hospitals, showing small amounts of dieldrin, p,p'-dichlorodiphenylethane (pp'-DDE), and benzene hexachloride (BHC) isomers to be commonly present in small amounts in gallstones. Some explanation for the presence of these residues in the stones is given. A case of suspected poisoning by these compounds showed an unusually large amount of dieldrin in the patient's stones.

Bioaccumulation of Polychlorinated Biphenyls and Organochlorine Pesticides in Selected Fish Species as an Indicator of the Pollution of Aquatic Resources in Vojvodina, Yugoslavia

1992 ◽  
Vol 26 (9-11) ◽  
pp. 2361-2364 ◽  
Author(s):  
M. Vojinovic-Miloradov ◽  
P. Marjanovic ◽  
D. Buzarov ◽  
S. Pavkov ◽  
Lj. Dimitrijevic ◽  
...  
Keyword(s):  
Polychlorinated Biphenyls ◽  
Organochlorine Pesticides ◽  
Fish Species ◽  
Food Chain ◽  
Limit Of Detection ◽  
Fish Tissue ◽  
Aquatic Resources ◽  
Fish Samples ◽  
High Concentrations ◽  
High Degree

Long term pollution of selected aquatic resources of Vojvodina with polychlorinated biphenyls (PCB's) and organochlorine pesticides (OCP's) has led to high degree of bioaccumulation of the above chemicals along the food chain. This paper documents the bioaccumulation in two fish species commonly found in rivers and canals of Vojvodina, common carp (Cyprinus Carpio) and pike (Exos lucinus). Samples offish, sediment and water were collected from the Danube, Sava and Tisa rivers and a fish farm “Ečka” which is supplied with water from the river Tisa and river Begej. All samples were analysed by highly sensitive capillary column GC using EC detectors. Samples were analysedfor aspectrum of compounds and are presented here as total PCB's and OCP's. The results show that the studied compounds are present in water samples at very low concentrations (PCB's in concentrations at or below the limit of detection, OCP's in concentrations below the legally allowable concentrations by Yugoslav norms). The sediment samples contain the studied compounds at significantly higher concentrations but still within the expectable range. Fish tissue contained elevated concentrations, and especially so the tissue of the top predator in the food chain, the Pike, showing that bioaccumulation has occurred. Of special concern are the extremely high concentrations of PCB's in the tissue of fish samples collected from river Sava indicating the still existing effects of pollution by PCB's in the watershed of the river Sava.

Gas-Liquid Chromatographic Determination of S,S,S-Tributyl Phosphorotrithioate (DEF) in Water and Fish Tissue

1983 ◽  
Vol 66 (3) ◽  
pp. 673-676
Author(s):  
R G Lehmann ◽  
L M Smith ◽  
R H Wiedmeyer ◽  
J D Petty
Keyword(s):  
Gel Permeation Chromatography ◽  
Fish Tissue ◽  
Chromatographic Determination ◽  
Gel Chromatography ◽  
Tissue Extracts ◽  
Fish Samples ◽  
Silica Gel Chromatography ◽  
Tributyl Phosphorotrithioate ◽  
Liquid Chromatographic

Abstract Methods are described for determination of S,S,S-tributylphosphorotrithioate (DEF) at levels as low as 5 parts per billion in fish and 200 parts per trillion in water. Fish tissue extracts are subjected to gel permeation chromatography (GPC) and silica gel chromatography; water samples are extracted with dichloromethane. Analyses are carried out by gas chromatography in which either electron capture or thermionic specific detectors are used. The applicability of the methods is demonstrated by analyses of water and fish samples from exposure studies

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