Dispersive micro-solid-phase extraction using chitosan/polymethacrylate/clay bionanocomposite followed by UV–Vis spectrophotometry for determination of zinc

Uygun, Hilmiye Deniz Ertuğrul; Antep, Mine; Demir, M. Nalan; Merdıvan, Melek

doi:10.1007/s11696-020-01169-3

Cited by 10 publications

(2 citation statements)

References 44 publications

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“…Improved Zn detection in real samples requires and benefits from a pre-concentration and enrichment process. Due to its safety, environmental friendliness, simplicity, speed, single-stage operation, and affordability, the CPE technique is regarded as a preconcentration and enrichment phase [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…Liquid-liquid micro-extraction [13,14], solidphase extraction [15,16], and chemical partitioning extraction [17][18][19][20][21][22][23][24][25][26] are the three most popular preconcentration techniques for finding Zn(II) in various materials right now. Because these processes can reduce or stop the usage or manufacture of harmful compounds, separation and preconcentration based on CPE have received a lot of attention recently.…”

Section: Introductionmentioning

confidence: 99%

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Efficiency enhancement of the spectrophotometric determination of Zinc in water, food and pharmaceutical preparations samples using Cloud Point Extraction

et al. 2022

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To increase the analytical effectiveness of spectrophotometric detection of zinc (Zn (II)) in water, food, tobacco, and pharmaceutical preparations samples, cloud point extraction (CPE) and a new chromogenic reagent were used in this study. The proposed methodology is based on measuring the absorbance of a Zn(II) complex with 2-amino-4-(4-nitrophenyl) diazenyl) pyridine-3-ol (ANPDP) at pH 9.0 in Triton X-114 at maximum 595 and maximum 605 nm for methods without and with CPE. Investigation and optimization were done on the key variables determining CPE effectiveness. For techniques without CPE and with CPE, respectively, the calibration graph was linear under ideal conditions in the ranges of 10-140 µg mL -1 and 0.01-0.8 µg mL -1 , with R 2 = 0.9989 and 0.9997, respectively. For techniques without CPE and with CPE, the detection limits were 3.0 µg mL-1 and 0.003 µg mL -1 with a preconcentration factor of 50, respectively. As precision, the relative standard deviation (RSD %) is 4.0%. The interactions of various cations and anions have been studied. The proposed CPE method was successfully used to estimate Zn (II) in a variety of samples, including water, food, tobacco, and pharmaceutical preparations.

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Section: Introductionmentioning

confidence: 99%