Technologies for detection of HRPs in wastewater

Qiao, Ruxia; Cheng, Shuiyuan; Zhao, Huajin

doi:10.1016/b978-0-12-816448-8.00004-6

Cited by 7 publications

(3 citation statements)

References 80 publications

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“…GC–MS can detect traditional volatile and semi-volatile pollutants, thus have an essential role in the analysis of persistent organic pollutants. However, GC–MS cannot determine the compounds that are neither vaporizable nor esterified ( Zhang et al., 2020 ). The mass spectra of the major peaks in the gas chromatograms of different wastewater extracts at particular retention time were compared with the NIST library which reveals the presence of various aliphatic and aromatic organic compounds and broadly categorised as pthalates, phthallic acid derivatives, alkanes and their derivatives, PAHs derivatives, esters of acids, cholestane derivatives and some pesticides such as chlorpyrifos etc ( Table 3 ; Figure 1 ).…”

Section: Resultsmentioning

confidence: 99%

Cyto-genotoxic potential of petroleum refinery wastewater mixed with domestic sewage used for irrigation of food crops in the vicinity of an oil refinery

Khatoon¹,

Malik²

2021

Heliyon

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Petroleum refinery wastewater combined with domestic sewage were collected from the open channel in the vicinity of Mathura oil refinery, UP (India) and analysed by inductively coupled plasma optical emission spectrometry (ICP-OES) and gas chromatography-mass spectrometry (GC-MS) for elemental analysis and organic pollutants, respectively. Several potentially toxic and non-toxic elements were found to be present in the wastewater samples. GC-MS analysis revealed the presence of several organic contaminants including pesticides. Wastewater samples were extracted using amberlite XAD4/8 resins and liquid-liquid extraction procedures using different organic solvents. The extracts were tested for their cyto-genotoxic potential using bacterial (Salmonella mutagenicity test, E. coli K-12 DNA repair defective mutants, Bacteriophage λ assay) and plant (Vigna mungo phytotoxicity test, Allium cepa chromosomal aberration assay) systems. A significant increase was observed in the number of revertants of TA97a, TA98 and TA100 strains with the test samples and XAD concentrated samples were found to be more mutagenic than liquid-liquid extracts. Colony forming units (CFUs) of DNA repair defective mutants of E. coli K-12 recA, lexA and polA declined significantly as compared to their isogenic wild-type counterparts with the test samples. Significant reduction in plaque forming units (PFUs) of bacteriophage λ was also found on treatment with the solvent extracts. Presence of several toxic pollutants in the wastewater apply prohibitive action on the seed germination process. Germination rate of Vigna mungo seeds as well as radicle and plumule lengths were found to be affected when treated with different concentration of wastewater as compared to control. Present study also indicated concentration dependent reduction in mitotic index of A. cepa i.e., 16.38% at 5% and 9.74% at 100% wastewater and percentage of aberrant cells were highest at 100% effluent. Present findings indicated that mutagenicity/genotoxicity of wastewater is due to the mixture of genotoxins; poses serious hazards to the receiving waterbodies which require continuous monitoring and remedial measures for their improvement.

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Section: Resultsmentioning

confidence: 99%

Cyto-genotoxic potential of petroleum refinery wastewater mixed with domestic sewage used for irrigation of food crops in the vicinity of an oil refinery

Khatoon¹,

Malik²

2021

Heliyon

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“…Various analytical methods were used for the selective determination of Hg (II) such as inductively coupled plasma mass spectrometry (ICP-MS), inductively coupled plasma-atomic emission spectrometry (ICP-AES) [19,20], cold-vapor atomic absorption spectroscopy (CVAAS) [21]. Currently, some methods are employed as inexpensive and fast techniques for Hg (II) detection such as colorimetry [22,23], fluorimetry [24] and voltammetric methods [25]. In this work, a rapid and sensitive spectrophotometric method was proposed for the determination of Hg (II) using azo ligand derivative from 4,5-bis(4-methoxyphenyl) imidazole as an analytical reagent, in addition to studying the biological effect for the reagent and his Hg (II)-complex.…”

Section: -Introductionmentioning

confidence: 99%

Spectrophotometric Determination of Hg (II) Using (E)-2-(4,5-bis(4-methoxyphenyl)-1H-imidazol-4-yl) diazenyl) benzoic acid as analytical reagent

2022

pnr

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A simple and low cost spectrophotometric method was proposed for the determination of Hg (II) in trace amounts using azo ligand derivative from 4,5-bis(4-methoxyphenyl) imidazole as spectrophotometer reagent. The proposed method is based upon the chelation of Hg (II) with the novel azo ligand, the formed violet complex has a maximum absorption at 546 nm. The mole ratio of the complex was 1:2 (metal:ligand). The reaction obeys Beer`s-Lambert law in the concentration range of (0.5-10) µg mL-1. The limit of detection LOD and the limit of quantification LOQ were 0.190 and 0.634 µg mL-1. The molar absorptivity and sandell's sensitivity are 7.963 ×10+3 L mol-1 cm-1 and 0.025 µg cm-2, respectively. The relative standard deviation RSD% for (n=10) was 1.607%. The interfering effect of cations and anions was studied. The azo compound and its Hg (II) complex were investigated for their biological activity.

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“…However, their application is still limited due to the interference of other metal ions and sophisticated synthesis of probe materials [32,33]. Voltammetric methods which are electrochemical techniques have a high potential for the determination of Hg 2+ in the field compared to other methods [34,35]. This is because of possessing some inherent characteristics, including selectivity and sensitivity, miniaturization, cost-effectiveness, and rapid analysis time [36].…”

Section: Introductionmentioning

confidence: 99%

Determination of Hg2+ by Diphenylcarbazone Compound in Polymer Film

Kazemzadeh

Kazemzadeh²

2019

jcc

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A sensitive optical sensor for determining Hg 2+ concentration has been prepared by incorporating the indicator dye, diphenylcarbazone compound, into cellulose acetate polymer film. To prepare the sensor, a cellulose acetate film was hydrolyzed with base and then the diphenylcarbazone compound bonded to the film. This method is easy to perform and uses acetyl cellulose as a carrier. According to the results, the prepared sensor was able to determine the Hg 2+ concentration with a ±6% error. Also, the adsorption capacity was 3.41 × 10 -3 mmol/g.

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Technologies for detection of HRPs in wastewater

Cited by 7 publications

References 80 publications

Cyto-genotoxic potential of petroleum refinery wastewater mixed with domestic sewage used for irrigation of food crops in the vicinity of an oil refinery

Cyto-genotoxic potential of petroleum refinery wastewater mixed with domestic sewage used for irrigation of food crops in the vicinity of an oil refinery

Spectrophotometric Determination of Hg (II) Using (E)-2-(4,5-bis(4-methoxyphenyl)-1H-imidazol-4-yl) diazenyl) benzoic acid as analytical reagent

Determination of Hg2+ by Diphenylcarbazone Compound in Polymer Film

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