Journal Of Chemical Society Of Nigeria最新文献_第5页

COMPARATIVE STUDY OF THE EFFECT OF POLY(LACTIC- ACID), STARCH, CHARCOAL ON PHYSICO-MECHANICAL PROPERTIES OF VIRGIN AND WASTE LOW DENSITY POLYETHYLENE COMPOSITES. 聚乳酸、淀粉、木炭对原、废低密度聚乙烯复合材料物理力学性能影响的比较研究。

Journal Of Chemical Society Of Nigeria Pub Date : 2023-07-18 DOI: 10.46602/jcsn.v48i3.897

I. A. Dina, C. E. Gimba, A. Hamza, P. Ekwumemgbo

引用次数: 0

QUALITATIVE PHYTOCHEMICAL ANALYSIS OF LEAVE AND STEM BARK OF Zanthoxylum zanthoxyloides AND Zanthoxylum gilletti 花椒和花椒叶和茎皮的定性植物化学分析

Journal Of Chemical Society Of Nigeria Pub Date : 2023-07-09 DOI: 10.46602/jcsn.v48i3.891

H. O. Ozigis, K. A. Olaifa, A. O. Agbeja, L. O. Asabia, D. R. Akindolu, M. Majolagbe

{"title":"QUALITATIVE PHYTOCHEMICAL ANALYSIS OF LEAVE AND STEM BARK OF Zanthoxylum zanthoxyloides AND Zanthoxylum gilletti","authors":"H. O. Ozigis, K. A. Olaifa, A. O. Agbeja, L. O. Asabia, D. R. Akindolu, M. Majolagbe","doi":"10.46602/jcsn.v48i3.891","DOIUrl":"https://doi.org/10.46602/jcsn.v48i3.891","url":null,"abstract":"This study reveals result on qualitative phytochemical analysis, mineral analysis on powdered leaves and stem bark of Zanthoxylum zanthoxyloides and Zanthoxylum gilletti, micromorphology of the leaves of Zanthoxylum zanthoxyloides and Zanthoxylum gilletti. The phytochemicals analysis of the two species showed significant phytocompounds such as (saponnin, tannin,alkaloid, steroids, anthraquinone, cardiac glycosides and flavonoids) at varying strength of availability in the powdered leaves and stem bark. The leaves of Zanthoxylum zanthoxyloides were found to contains tannin, terpenoids, steroids, cardiac glycosides, phenol, phlobotannin and flavonoids while the stem bark contained all of the phytochemicals tested except alkaloid and anthraquinone. The leaves of Zanthoxylum gilletti were also found to contains saponnin, tannin,alkaloid, terpenoids, steroids, cardiac glycosides, phenol, phlobotannin and flavonoids while the stem bark contains all the phytochemicals tested except phenol and sterol. The presence of phytochemicals and minerals in the leaves and bark of Z. zanthoxyloides and Z. gilletti justify their popularity as a very potent plant that could be used in the treatment of various diseases. \u0000 ","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73602178","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

THE STUDY OF USING NATURAL FILLERS ON THE BIODEGRADATION PROPERTIES OF VIRGIN/WASTE LOW DENSITY POLYETHYLENE AND VIRGIN/WASTE HIGH DENSITY POLYETHYLENE COMPOSITES. 利用天然填料对原/废低密度聚乙烯和原/废高密度聚乙烯复合材料生物降解性能的研究。

Journal Of Chemical Society Of Nigeria Pub Date : 2023-07-09 DOI: 10.46602/jcsn.v48i3.892

I. A. Dina, C. E. Gimba, A. Hamza, P. Ekwumemgbo

引用次数: 0

INVESTIGATION OF THE EFFECT OF DIFFERENT SOLVENT RATIOS IN THE CHEMOMETRIC PHYTO-EXTRACTION AND IN-VITRO SCREENING OF Carica papaya FRUIT, USING RESPONSE SURFACE METHODOLOGY [RSM] 响应面法研究不同溶剂比对番木瓜果实化学植物提取及体外筛选的影响

Journal Of Chemical Society Of Nigeria Pub Date : 2023-07-09 DOI: 10.46602/jcsn.v48i3.895

C. Ike-Amadi, F. Nwabue, K. Ekea-John, F. Nworie

{"title":"INVESTIGATION OF THE EFFECT OF DIFFERENT SOLVENT RATIOS IN THE CHEMOMETRIC PHYTO-EXTRACTION AND IN-VITRO SCREENING OF Carica papaya FRUIT, USING RESPONSE SURFACE METHODOLOGY [RSM]","authors":"C. Ike-Amadi, F. Nwabue, K. Ekea-John, F. Nworie","doi":"10.46602/jcsn.v48i3.895","DOIUrl":"https://doi.org/10.46602/jcsn.v48i3.895","url":null,"abstract":"Carica papaya plant is a popular medicinal plant with notable anti-parasitic potentials. This work reports chemometrics of the three solvents [petroleum ether, chloroform and methanol] in the in-vitro screening of Plasmodium falciparum and Trypanosome brucei b. The Response Surface Methodology [RSM] method based on a second order and three variables Box-Behnken Design (BBD) was employed to obtain the optimal combination of extraction conditions. The extraction process parameters of the fruit of Carica papaya were optimized by BBD so as to get maximal yield of bio-actives. Different solvent ratios were used to achieve different response optimized by chemometric. For the in-vitro screening of Plasmodium falciparum and Trypanosome brucei b., the extracts of Carica papaya fruit were subjected to assay procedures to see their viability. Summarily, the 3D response surface plot and the contour plot derived from the mathematical models were applied to determine the optimal conditions. Under the optimized conditions, the experimental value of 77.97% viability on Plasmodium f. was in close agreement with the value predicted (77.97 ± 0.01 %) by the model and 82.86 ± 1.10%was predicted for Trypanosome brucei b. with an experimented value of 83.48%; showing close correlation between the predicted and experimental values. Considering RSM studies, it was found that the mixture of petroleum ether, chloroform and methanol solvents at a ratio of 55 mL: 27.50 mL: 17.50 mL gave an optimum viability on the in-vitro screening. Hence, the polarity of solvent affects the yield of bioactive compounds in the plant material. \u0000 ","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88003472","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

EXTRACTION AND TRANSESTERIFICATION OF OIL FROM PALM KERNEL CATALYSED BY 10%H2SO4 AND 10%NaOH MODIFIED CLAY MATERIALS 10%H2SO4和10%NaOH改性粘土材料催化棕榈仁油的提取和酯交换反应

Journal Of Chemical Society Of Nigeria Pub Date : 2023-07-05 DOI: 10.46602/jcsn.v48i3.886

L. Leke, M. E. Ogah, T. T. Weor, S. Okopi, T. T. Undo, E. S. Orhena

{"title":"EXTRACTION AND TRANSESTERIFICATION OF OIL FROM PALM KERNEL CATALYSED BY 10%H2SO4 AND 10%NaOH MODIFIED CLAY MATERIALS","authors":"L. Leke, M. E. Ogah, T. T. Weor, S. Okopi, T. T. Undo, E. S. Orhena","doi":"10.46602/jcsn.v48i3.886","DOIUrl":"https://doi.org/10.46602/jcsn.v48i3.886","url":null,"abstract":"Biodiesel production has gained prominence owing to the menace of climate change believed to be caused majorly by fossil fuel combustion. The heterogeneous transesterification option is regularly employed considering its enormous advantages. This research sampled abundant and locally available and renewable materials; palm kernel (for extraction of oil) and clay (employed as a catalyst). The clay was calcined at 400 oC, modified using 10 % by weight H2SO4 and NaOH respectively, characterised by BET and X-ray diffraction and then used for transesterification with the extracted palm kernel oil to produce biodiesel in a 1: 9 oil to methanol ratio and 10 % catalyst dosage of the acid (H2SO4) and alkali (NaOH) modified clay respectively. The results show biodiesel yields of 66.67 % and 73.33 % respectively. The physicochemical characterisation of the biodiesels obtained had values that conformed with ATSM values for good biodiesel, while their GC-MS analyses confirmed the presence of many fatty acid methyl esters which are responsible for biodiesel production. X-ray diffraction and BET analyses respectively showed crystallinity and presence of some minerals with surface area (65.52 – 72.43 m2g-1), pore size (0.997 Ao) and pore volume (24.54 – 28.04 cm3/g) for the clay. These abundant environmentally friendly biofuels that are economically produced, show very good prospects of replacing fossil fuels. \u0000 ","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85715770","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 INTO THE PESTICIDES RESIDUES IN SESAME, MILLET, RICE, AND GUINEA CORN GROWN AROUND THE HADEJIA-KOMADUGU-YOBE RIVER AREA IN YOBE STATE, NIGERIA. 尼日利亚约贝州hadejia - komadgu - yobe河流域芝麻、小米、水稻和几内亚玉米农药残留调查。

Journal Of Chemical Society Of Nigeria Pub Date : 2023-07-05 DOI: 10.46602/jcsn.v48i3.889

S. Shettima, A. M. Gashinge, A. Baffa, A. Akinlabi, A. S. Abdulkadir

{"title":"INVESTIGATION INTO THE PESTICIDES RESIDUES IN SESAME, MILLET, RICE, AND GUINEA CORN GROWN AROUND THE HADEJIA-KOMADUGU-YOBE RIVER AREA IN YOBE STATE, NIGERIA.","authors":"S. Shettima, A. M. Gashinge, A. Baffa, A. Akinlabi, A. S. Abdulkadir","doi":"10.46602/jcsn.v48i3.889","DOIUrl":"https://doi.org/10.46602/jcsn.v48i3.889","url":null,"abstract":"Application of pesticides during crop production often results in pesticide residue, a significant source of heavy metals in the harvested crops. This raises concern for consumers' health due to the potentially deleterious effects of pesticides on animals, particularly humans. This study examined the levels of pesticide residues using a gas chromatography-mass spectrometry (GC-MS) system and heavy metal elements concentration using Atomic Absorption Spectrometry (AAS) in four food crops (Sesame, Millet, Rice, and Guinea corn) cultivated in (Gwio-Kura) Gashua and Hadejia towns in Nigeria. The results disclosed that Sesame was the only crop with Dichlorvos from both Gashua and Hadejia, surpassing the WHO's limit for pesticide residue concentrations, and that the Hadejia samples had higher levels than the Gashua samples. The study also detected traces of Cadmium (Cd), Lead (Pb), Nickel (Ni), and Manganese (Mn) in the crops, but they were below the permissible intake levels established by FAO/WHO. However, Arsenic (As) and Chromium (Cr) exceeded the FAO/WHO limits and may entail serious health problems such as kidney damage and cancer. Mercury (Hg) was not detected in any of the crops. Our findings suggest health authorities monitor and regulate heavy elements intake in food crops, especially those with high toxic contamination, to prevent adverse health effects such as the kidney disease on humans and animals, currently prevalent in the area. \u0000 ","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91322722","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 THE IMPACT OF POTENTIALLY TOXIC ELEMENTS FROM URBAN FLOODED AREAS IN PORT HARCOURT CITY, NIGERIA 调查来自尼日利亚哈科特港城市洪水地区的潜在有毒元素的影响

Journal Of Chemical Society Of Nigeria Pub Date : 2023-07-05 DOI: 10.46602/jcsn.v48i3.885

P. Amaibi, N. J. Maduelosi, S. Lekia

{"title":"INVESTIGATION OF THE IMPACT OF POTENTIALLY TOXIC ELEMENTS FROM URBAN FLOODED AREAS IN PORT HARCOURT CITY, NIGERIA","authors":"P. Amaibi, N. J. Maduelosi, S. Lekia","doi":"10.46602/jcsn.v48i3.885","DOIUrl":"https://doi.org/10.46602/jcsn.v48i3.885","url":null,"abstract":"Flooding transports significant environmental contaminants in soils especially potentially toxic elements (PTEs). The prevalence of PTEs in the environment poses serious threat to human health. Anthropogenic activities contribute to elevation of PTEs contents in soils. In this study, a total of 24 soil samples collected from six study areas within Port Harcourt city were analysed to determine level of some elements (As, Cd, Cr, Pb and Ni) following the acid digestion methods. Samples were taken from different soil profiles ranging from topsoil (0 – 30 cm) to sub-soil (30 – 60 cm). Each sample was subjected to three acid digestion procedures namely: aqua regia, reversed aqua regia and multi-acid attack. For purposes of quality control, levels of the elements of interest in the digested samples along with blanks were measured using atomic absorption spectrometer (AAS). A wide range of total concentrations of the toxic elements was found, with high level of concentration obtained in the topsoil. The proportion of elements released by the multi- acid attack method was higher than those of aqua regia and reversed aqua regia methods. This finding suggests that the heavy metals bound to silicate minerals are not easily dissolved in simple mineral acids. A correlation analysis revealed a strong association between Pb and total organic carbon (r = 0.950012), indicating that the source of Pb contaminants may be derived from organic matter contents. The potential health risk associated with PTEs indicated non-carcinogenic risk for children and carcinogenic risk for adults living in the flooded areas. Further monitoring of flooded areas in Port Harcourt metropolis is recommended for other environmental contaminants beside the PTEs monitored. \u0000 ","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91349418","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

PROXIMATE ANALYSIS AND DETERMINATION OF POLYCYCLIC AROMATIC HYDROCARBONS IN PROCESSED ANIMAL SKIN SOLD IN MAJOR MARKETS IN SOUTH WEST NIGERIA. 尼日利亚西南部主要市场销售的加工动物皮中多环芳烃的近似分析和测定。

Journal Of Chemical Society Of Nigeria Pub Date : 2023-07-05 DOI: 10.46602/jcsn.v48i3.887

T. Osobamiro, O. Oluwole, S. Abdullah

{"title":"PROXIMATE ANALYSIS AND DETERMINATION OF POLYCYCLIC AROMATIC HYDROCARBONS IN PROCESSED ANIMAL SKIN SOLD IN MAJOR MARKETS IN SOUTH WEST NIGERIA.","authors":"T. Osobamiro, O. Oluwole, S. Abdullah","doi":"10.46602/jcsn.v48i3.887","DOIUrl":"https://doi.org/10.46602/jcsn.v48i3.887","url":null,"abstract":"This study aimed at determining the nutritional and level of chemical contaminants (heavy metals and Polyaromatic Hydrocarbons PAHs) incommonly consumed animal skin sold in major markets in South-West, Nigeria. Proximate analysis (crude protein, moisture content, carbohydrate, ash content, oil content, nitrogen value and crude fibre) and heavy metals and PAHs concentrations were determined to evaluate the nutritional composition and safety of regular consumption of these products and to validate the notion that animal skin as a source of protein, can replace meat in meals. Samples of animal skin were purchased from three major markets in Lagos and Ogun State. Proximate composition was determine using standard analytical methods, while levels of heavy metal (Fe, Pb, Cd, Cr and As) and PAHs were using Atomic Absorption Spectroscopy and GC-MS respectively.The results of proximate composition were as follows (%); for the brown samples; the moisture content (≤81.40±1.80, ash content (≤0.94±0.01, oil content (≤1.60±0.01, crude protein (≤3.75±0.85, crude fibre (≤1.25±0.01) and carbohydrate (≤14.51±1.20). The concentrations of heavy metals detected in the samples were as follows (mg/kg); Fe ≤0.068±0.001, Cd ≤0.006±0.001, Pb≤0.004 ±0.001 and Cr≤0.004±0.001, all were below the maximum permissible limit set by WHO and USEPA while, Arsenic was below the detection limit of the instrument. Seventeen PAHs were detected in the samples and all were above the maximum permissible limits with high health risk. It is therefore advised that cow skin be discouraged and more awareness created so that people will know the dangers to health posed by this harmful practice. \u0000 ","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74336252","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

SOLVOTHERMAL SYNTHESIS AND CHARACTERIZATION OF TEREPHTHALIC ACID-BASED METAL-ORGANIC FRAMEWORKS AND THEIR CATALYTIC APPLICATION IN BIODIESEL PRODUCTION 对苯二甲酸基金属有机骨架的溶剂热合成与表征及其在生物柴油生产中的催化应用

Journal Of Chemical Society Of Nigeria Pub Date : 2023-07-05 DOI: 10.46602/jcsn.v48i3.884

C. Odu, C. Obunwo, O. Bull

{"title":"SOLVOTHERMAL SYNTHESIS AND CHARACTERIZATION OF TEREPHTHALIC ACID-BASED METAL-ORGANIC FRAMEWORKS AND THEIR CATALYTIC APPLICATION IN BIODIESEL PRODUCTION","authors":"C. Odu, C. Obunwo, O. Bull","doi":"10.46602/jcsn.v48i3.884","DOIUrl":"https://doi.org/10.46602/jcsn.v48i3.884","url":null,"abstract":"Metal-Organic Frameworks (MOFs) are a class of porous crystalline materials, consisting of metal ions or nodes linked with organic ligands. The study was aimed at solvothermal synthesis and characterization of terephthalic acid-based Metal-Organic Frameworks and their catalytic application in biodiesel production. Three MOFs of Cu-, Fe-, and Cr-based were solvothermally synthesized, characterized and applied as catalysts in biodiesel production using ethanol and oil extracted from Yellow Oleander seeds. The MOFs were synthesized using terephthalic acid as the linker and copper (II), iron (III) and chromium (III) nitrates as metal ion sources. Each of the synthesized MOFs showed high melting point exceeding 360 oC. Microscopic view and powder X- ray diffraction analysis indicated Cu-MOF to be crystalline with numerous sharp peaks while those for Fe- and Cr-MOFs were amorphous. A comparison of the FT-IR spectra of the ligand and those of the MOFs confirmed the presence of the ligand in the synthesized MOFs. In the absence of a catalyst, the transesterification was not achieved. However, in the presence of the more crystalline Cu-MOF as catalyst resulted to high yield (83.33%) and in a shorter time compared to the less crystalline Fe- (33.33%) and Cr- (25.00%) MOFs. Thus, catalytic ability of the MOFs were in the order: Cu-MOF > Fe-MOF > Cr-MOF. Hence MOFs especially Cu-MOFs can be applied as catalyst in biodiesel production. Further studies and characterization (single X-ray diffraction) should be done for proper elucidation of the crystal structure of the MOFs. \u0000 ","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85867579","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

COMPARATIVE RISK ASSESSMENT OF SOME TOXIC ELEMENTS’ CONTENTS IN DOMESTIC AND IMPORTED TOMATO PASTES AND KETCHUP IN NIGERIAN MARKETS 尼日利亚市场上国产和进口番茄酱中有毒元素含量的比较风险评估

Journal Of Chemical Society Of Nigeria Pub Date : 2023-07-05 DOI: 10.46602/jcsn.v48i3.890

F. O. Oladapo, J. O. Awokoya, T. D. Egbedeyi

{"title":"COMPARATIVE RISK ASSESSMENT OF SOME TOXIC ELEMENTS’ CONTENTS IN DOMESTIC AND IMPORTED TOMATO PASTES AND KETCHUP IN NIGERIAN MARKETS","authors":"F. O. Oladapo, J. O. Awokoya, T. D. Egbedeyi","doi":"10.46602/jcsn.v48i3.890","DOIUrl":"https://doi.org/10.46602/jcsn.v48i3.890","url":null,"abstract":"Although tomato consumption, whether as tomato paste or tomato ketchup, offers several health advantages, the future prognostic indicators hypothesize the disappearance of these gains due to heavy metal poisoning. Therefore, using the Microwave Plasma Atomic Emission Spectroscopy (MP-AES) technique, this study examined and compared the amounts of arsenic (As), nickel (Ni), cadmium (Cd), lead (Pb), and mercury (Hg) in locally produced and imported tomato pastes and ketchup sold in Nigerian markets. The mean concentrations of these targeted elements in tomato pastes and ketchup (in mg.kg-1) respectively are presented as follows: As (domestic & imported: < LOQ), Ni (domestic:0.308, 0.289; imported: 0.271, 0.267), Cd (domestic:0.088, 0.075; imported:0.078, 0.083), Pb (domestic: 0.121, 0.102; imported:0.128, 0.136) and Hg (domestic and imported: <LOD). As, Ni, and Cd contents in domestic and imported tomato pastes and ketchup samples and daily intake rates (DIR) were within acceptable levels recommended by regulatory agencies. Except when combined metals’ hazard quotients are considered, which may pose serious health concern, individual’s metal effect constitutes a negligible health risk. \u0000 ","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"110 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79238512","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