Glasnik Hemicara i Tehnologa Bosne i Hercegovine最新文献_第2页

Bioaccumulation of metals in fish from hydro-accumulations on the Neretva River, Bosnia and Herzegovina used in different diets 波斯尼亚和黑塞哥维那内雷特瓦河上不同饮食中金属在鱼类体内的生物积累

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Glasnik Hemicara i Tehnologa Bosne i Hercegovine Pub Date : 2022-12-29 DOI: 10.35666/2232-7266.2021.59.04

{"title":"Bioaccumulation of metals in fish from hydro-accumulations on the Neretva River, Bosnia and Herzegovina used in different diets","authors":"","doi":"10.35666/2232-7266.2021.59.04","DOIUrl":"https://doi.org/10.35666/2232-7266.2021.59.04","url":null,"abstract":"There is a growing need to assess the level of contaminants in fish as bioindicators of the health and well-being of fish and humans as its consumers. Contamination by heavy metals (Cd, Cr, Cu, Fe, Mn, Pb, Zn) was evaluated using atomic absorption spectrometer, flame and graphite furnace technique in the water samples and fish muscle tissues of Sander lucioperca, Leuciscus svallize and Tinca tinca of four hydro-accumulation lakes on the Neretva River, Bosnia and Herzegovina.Samples were collected during two seasons: autumn-winter and spring-summer (2019). It has been shown that iron (Fe) was the highest accumulating metal in fish, whilst cadmium (Cd) and lead (Pb) were the lowest. Heavy metals contents were below the maximum permissible for drinking water and for fish as prescribed by national legislation. According to correlation matrix between metals content in all fish during both fishing seasons, the highest values of the Pearson coefficient were obtained in the case of essential elements (Fe, Mn, Cu and Zn) and Fe and Mn also had a statistically significant correlation with Cd and Pb. Furthermore, potential health risk assessment exposure of the adult population in B&H revealed that none of the seven heavy metals pose risk to human health, based on the estimated daily intake via consumption of these fish species as well as target hazard quotient and hazard index values less than 1.","PeriodicalId":40710,"journal":{"name":"Glasnik Hemicara i Tehnologa Bosne i Hercegovine","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2022-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81047171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of Inhibitory Effect of the Rubus idealis L. Extract on Corrosion of Copper 理想蒺藜提取物对铜腐蚀抑制作用的研究

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Glasnik Hemicara i Tehnologa Bosne i Hercegovine Pub Date : 2022-12-01 DOI: 10.35666/2232-7266.2021.59.01

{"title":"Investigation of Inhibitory Effect of the Rubus idealis L. Extract on Corrosion of Copper","authors":"","doi":"10.35666/2232-7266.2021.59.01","DOIUrl":"https://doi.org/10.35666/2232-7266.2021.59.01","url":null,"abstract":"The aim of this work was to examine the impact of raspberry extract (Rubus idaeus L.) on copper corrosion characteristics. The raspberry leaf extract was prepared using Soxhlet extraction with ethanol as solvent. The estimation of the total polyphenol content in the obtained sample was determined by UV/Vis spectrophotometric method. The identification and quantification of phenolic acids was performed using HPLC analytical method.In addition, the aim of this work was to examine the impact of individual phenolic compounds (rutin, gallic acid, quercetin, and catechin hydrate) on the corrosion properties of copper. . , The corrosion rate of copper with the extract of the raspberryleafof the Polkavariety was tested. A copper corrosion test was performed in a 3% NaCl solution without and in the presence of the extract. The copper polarization resistance (Rp) values in 3% NaCl solution without and in the presence of the extract weredetermined by the linear polarization method. The corrosion behavior of copper in 3% NaCl solution without and in the presence of extract was determined by specific electrochemical parameters: corrosion potential (Ecorr), corrosion current density (Icorr), and slopes of the anode (βa) and cathode (βk). The electrochemicalimpedance spectroscopy method was used to examine the corrosion behavior of copper in 3% NaCl solution without and in the presence of extract. The results obtained by Tafel extrapolation showed that the corrosion rate decreases in the presence of the tested extract. Studies conducted by the electrochemical impedance spectroscopy method show that the tested extract slows down the kinetics of the corrosion process, which is visible through an increase in resistance. The results confirm that the examined extract can be used for protection in an aggressive medium, such as a 3% NaCl solution.","PeriodicalId":40710,"journal":{"name":"Glasnik Hemicara i Tehnologa Bosne i Hercegovine","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75315997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization and Validation of Europium-Sensitized Fluorescence Method for Determination of Tetracycline Antibiotics in Water from Fish Farms 铕敏化荧光法测定养鱼场水中四环素类抗生素的优化与验证

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Glasnik Hemicara i Tehnologa Bosne i Hercegovine Pub Date : 2022-12-01 DOI: 10.35666/2232-7266.2021.59.02

引用次数: 0

Correlation between antioxidant and physicochemical parameters of honey samples from Bosnia and Herzegovina and Turkey 波黑和土耳其蜂蜜抗氧化参数与理化参数的相关性

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Glasnik Hemicara i Tehnologa Bosne i Hercegovine Pub Date : 2022-12-01 DOI: 10.35666/2232-7266.2021.59.03

引用次数: 0

Investigation of the effect of the addition H2O2 on the general corrosion of brass in hydrochloric acid 加入H2O2对黄铜在盐酸中一般腐蚀的影响研究

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Glasnik Hemicara i Tehnologa Bosne i Hercegovine Pub Date : 2022-06-30 DOI: 10.35666/2232-7266.2022.58.05

{"title":"Investigation of the effect of the addition H2O2 on the general corrosion of brass in hydrochloric acid","authors":"","doi":"10.35666/2232-7266.2022.58.05","DOIUrl":"https://doi.org/10.35666/2232-7266.2022.58.05","url":null,"abstract":"In this paper, the influence of hydrochloric acid and the addition of oxidizing\u0000agents on the rate of general corrosion of brass was investigated. For comparison, the\u0000corrosion rate of copper and zinc in hydrochloric acid and in hydrochloric acid with\u0000oxidizing agent was also tested. The Taffel extrapolation method was used to examine the\u0000general corrosion of brass, copper and zinc. The Taffel extrapolation method involves\u0000scanning potential of the working electrode of ±250 mV in relation to its open-circuit\u0000otential (EOCP), at a speed of 0.5 mVs-1. Investigation of corrosion was conducted in a\u0000corrosion cell according to the ASTM G5 (ASTM G5-94) standard, on a\u0000potentiostat/galvanostat instrument, Princeton Applied Research, model 263A-2, with\u0000PowerCORR® software, which is part of the Power Suite softwere package. The tests\u0000were performed at room temperature, 20±1°C. The results show that the corrosion rate of\u0000brass is higher in hydrochloric acid with oxidizing agent than the corrosion rate of brass in\u0000hydrochloric acid. Examining the effect of hydrochloric acid and the addition of oxidizing\u0000agent on the rate of general corrosion of brass, it was found that the corrosion of brass has\u0000caused the zinc contained in it. Corrosion of zinc is highest in 0.1 M HCl + 0.1 M H2O2\u0000compared to corrosion of brass and copper in 0.1 M HCl + 0.1 M H2O2, where corrosion\u0000of copper is lowest in 0.1 M HCl + 0.1 M H2O2.","PeriodicalId":40710,"journal":{"name":"Glasnik Hemicara i Tehnologa Bosne i Hercegovine","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87441562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Temporal evolution of electrical resistance through the granularpacking of Ni beads 镍微珠颗粒堆积过程中电阻的时间演化

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Glasnik Hemicara i Tehnologa Bosne i Hercegovine Pub Date : 2022-06-30 DOI: 10.35666/2232-7266.2022.58.04

引用次数: 1

Phenolic content and bioactivity of two sour cherry cultivarsand their products 两种酸樱桃品种及其制品的酚类含量及生物活性研究

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Glasnik Hemicara i Tehnologa Bosne i Hercegovine Pub Date : 2022-06-30 DOI: 10.35666/2232-7266.2022.58.01

引用次数: 1

Extractability of sodium ions from soil 土壤中钠离子的可提取性

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Glasnik Hemicara i Tehnologa Bosne i Hercegovine Pub Date : 2022-06-30 DOI: 10.35666/2232-7266.2022.58.02

引用次数: 0

Synthesis, IR characterization and antioxidant capacity of Cu(II)complexes with amino acids and melatonin 铜(II)氨基酸和褪黑素配合物的合成、红外表征及抗氧化能力

IF 0.3

Glasnik Hemicara i Tehnologa Bosne i Hercegovine Pub Date : 2022-06-30 DOI: 10.35666/2232-7266.2022.58.03

{"title":"Synthesis, IR characterization and antioxidant capacity of Cu(II)\u0000complexes with amino acids and melatonin","authors":"","doi":"10.35666/2232-7266.2022.58.03","DOIUrl":"https://doi.org/10.35666/2232-7266.2022.58.03","url":null,"abstract":"In this paper, the reactions of anhydrous copper(II) chloride in methanolic solution with\u0000alanine, glycine, histidine, L-tryptophan, and melatonin were investigated and the resulting\u0000products were characterized by FTIR spectroscopy. Based on FTIR characterization, it was shown\u0000that these reaction conditions result in the formation of Cu(II) complexes with glycine and\u0000alanine, which are more complex structures than bis(glycinato) - and bis(alaninato) copper(II)\u0000complexes. Analysis of the FTIR spectrum of the histidine complex shows the participation of\u0000several groups in coordination at the Cu(II) center. The complex prepared with melatonin shows\u0000unusual changes in the spectral region of the amidic nitrogen bonds. The latter observation is very\u0000significant for very few known metal complexes of melatonin, while the synthesis of most of\u0000them is an experimentally demanding process with simultaneous control of several\u0000parameters. The antioxidant capacity of the synthesized complexes was examined, with the CEAC\u0000range from 121.6 to 734.4 µM. The lowest values of antioxidant capacity were recorded for the\u0000copper complex with tryptophan, while the highest values were recorded for the copper complex\u0000with alanine. A high antioxidant capacity of the copper complex with melatonin (673.8 µM) was\u0000also observed.","PeriodicalId":40710,"journal":{"name":"Glasnik Hemicara i Tehnologa Bosne i Hercegovine","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87267058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Smoking effect on the cadmium and zinc concentration in smokers and nonsmokers 吸烟对吸烟者和非吸烟者体内镉和锌浓度的影响

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Glasnik Hemicara i Tehnologa Bosne i Hercegovine Pub Date : 2021-12-30 DOI: 10.35666/2232-7266.2021.57.03

{"title":"Smoking effect on the cadmium and zinc concentration in smokers and nonsmokers","authors":"","doi":"10.35666/2232-7266.2021.57.03","DOIUrl":"https://doi.org/10.35666/2232-7266.2021.57.03","url":null,"abstract":"Studies have shown that cigarette smoking affects the accumulation of some heavy metals in certain tissues and metabolism of essential elements. The aim of the study was to determine the differences in the concentrations of cadmium in the blood and urine and zinc in the urine of smokers and ex-smokers in relation to non-smokers, and to determine the possible influence of cadmium concentration on zinc excretion as an essential element. The study included 106 subjects. Subjects were regular smokers (n=51), ex-smokers (n=38) and non-smokers (n=17). Atomic absorption spectrophotometry (AAS) with an electrothermal atomizer was used to determine cadmium. Zinc was determined by AAS with a flame atomizer. There was a significant difference in the values of cadmium in the blood between the groups: smokers and non-smokers (p<0.001), smokers and ex-smokers (p <0.001), and between ex-smokers and non-smokers (p = 0.045). There is a significant positive and strong correlation in the level of zinc and cadmium in urine per gram of creatinine, and as the level of cadmium increases, the level of zinc also increases (rho=0.781; p=0.001). The data indicate that cigarette smoking has been shown to be a factor that can increase cadmium levels to an extent that will significantly increase zinc excretion, or its increased loss.","PeriodicalId":40710,"journal":{"name":"Glasnik Hemicara i Tehnologa Bosne i Hercegovine","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89152376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1