Sequential determination of nickel and cadmium in tobacco, molasses and refill solutions for e-cigarettes samples by molecular fluorescence

Talio, María Carolina; Alesso, Magdalena; Acosta, Mariano; Wills, Verónica S.; Fernández, Liliana Patricia

doi:10.1016/j.talanta.2017.06.015

Cited by 22 publications

(14 citation statements)

References 37 publications

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“…If metal/metalloid levels were below the limit of detection (LOD) and the study reported the original data but not the mean (SD), we replaced values below the LOD by LOD= p 2 before calculating the mean (SD) (Beauval et al 2016(Beauval et al , 2017Kamilari et al 2018;Margham et al 2016;Song et al 2018;Tayyarah and Long 2014). For studies reporting the mean (SD) for multiple groups (e.g., by nicotine levels, by different flavors) (Goniewicz et al 2014;Kamilari et al 2018;Talio et al 2015Talio et al , 2017Tayyarah and Long 2014), we calculated the weighted mean and total SD to facilitate summary and comparison across studies and device types after confirming there were no major differences across flavors and nicotine levels. The total SD was estimated because it accounts for the SD within the groups as well as among the groups (Sharma 2006).…”

Section: Metal/metalloid Data Synthesismentioning

confidence: 99%

“…Most studies of e-liquids reported metals/metalloids in micrograms per kilogram. For easy comparison, for studies reporting e-liquid metal/metalloid levels in micrograms per liter (Beauval et al 2017;Hess et al 2017;Palazzolo et al 2017;Talio et al 2015Talio et al , 2017Zhao et al 2018) and parts per billion (ppb) (Beauval et al 2016;Dunbar et al 2018;Song et al 2018), those concentrations were converted to micrograms per kilogram, assuming the e-liquid density was 1:16 g=ml (Sleiman et al 2016). Most studies of aerosols reported metals/metalloids in ng per puff.…”

Section: Metal/metalloid Data Synthesismentioning

confidence: 99%

“…The number of different e-liquid samples in individual containers of different brand, flavor, or nicotine content ranged from 1 to 56, and the total number of samples analyzed for metal concentrations including replicates ranged from 3 to 132. Seven studies used inductively coupled plasma mass spectrometry (ICP-MS) to quantify element levels in e-liquids; others used atomic absorption spectrometry (AAS) (Dunbar et al 2018), total reflection X-ray fluorescence (Kamilari et al 2018), molecular fluorescence (Talio et al 2015;Talio et al 2017), and sector field inductively coupled plasma mass spectrometry (SF-ICP-MS) (Zhao et al 2018). Three studies used a mixture solution of propylene glycol and glycerol as blank e-liquids to assess matrix effects (Beauval et al 2016;Olmedo et al 2018;Palazzolo et al 2017); other studies did not report metal/metalloid background correction.…”

Section: Metal/metalloid Levels In E-liquidsmentioning

confidence: 99%

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Metal/Metalloid Levels in Electronic Cigarette Liquids, Aerosols, and Human Biosamples: A Systematic Review

Zhao

Aravindakshan

Hilpert

et al. 2020

Environ Health Perspect

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BACKGROUND: Electronic cigarettes (e-cigarettes) have become popular, in part because they are perceived as a safer alternative to tobacco cigarettes. An increasing number of studies, however, have found toxic metals/metalloids in e-cigarette emissions. OBJECTIVE: We summarized the evidence on metal/metalloid levels in e-cigarette liquid (e-liquid), aerosols, and biosamples of e-cigarette users across e-cigarette device systems to evaluate metal/metalloid exposure levels for e-cigarette users and the potential implications on health outcomes. METHODS: We searched PubMed/TOXLINE, Embase ® , and Web of Science for studies on metals/metalloids in e-liquid, e-cigarette aerosols, and biosamples of e-cigarette users. For metal/metalloid levels in e-liquid and aerosol samples, we collected the mean and standard deviation (SD) if these values were reported, derived mean and SD by using automated software to infer them if data were reported in a figure, or calculated the overall mean (mean ± SD) if data were reported only for separate groups. Metal/metalloid levels in e-liquids and aerosols were converted and reported in micrograms per kilogram and nanograms per puff, respectively, for easy comparison. RESULTS: We identified 24 studies on metals/metalloids in e-liquid, e-cigarette aerosols, and human biosamples of e-cigarette users. Metal/metalloid levels, including aluminum, antimony, arsenic, cadmium, cobalt, chromium, copper, iron, lead, manganese, nickel, selenium, tin, and zinc, were present in e-cigarette samples in the studies reviewed. Twelve studies reported metal/metalloid levels in e-liquids (bottles, cartridges, open wick, and tank), 12 studies reported metal/metalloid levels in e-cigarette aerosols (from cig-a-like and tank devices), and 4 studies reported metal/metalloid levels in human biosamples (urine, saliva, serum, and blood) of e-cigarette users. Metal/metalloid levels showed substantial heterogeneity depending on sample type, source of e-liquid, and device type. Metal/metalloid levels in e-liquid from cartridges or tank/open wicks were higher than those from bottles, possibly due to coil contact. Most metal/metalloid levels found in biosamples of e-cigarette users were similar or higher than levels found in biosamples of conventional cigarette users, and even higher than those found in biosamples of cigar users. CONCLUSION: E-cigarettes are a potential source of exposure to metals/metalloids. Differences in collection methods and puffing regimes likely contribute to the variability in metal/metalloid levels across studies, making comparison across studies difficult. Standardized protocols for the quantification of metal/metalloid levels from e-cigarette samples are needed. https://doi.

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Section: Metal/metalloid Data Synthesismentioning

confidence: 99%

Section: Metal/metalloid Data Synthesismentioning

confidence: 99%

Section: Metal/metalloid Levels In E-liquidsmentioning

confidence: 99%

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Metal/Metalloid Levels in Electronic Cigarette Liquids, Aerosols, and Human Biosamples: A Systematic Review

Zhao

Aravindakshan

Hilpert

et al. 2020

Environ Health Perspect

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“…Solid phase extraction offers several advantages such as flexibility, higher enrichment factors, simplicity and safety. Moreover, previous works have demonstrated that the deposit of the coacervate on solid surface improve the limits of detection and avoids the drawbacks associated to compounds desorption [35][36][37]. Different types of solid supports were studies in the present work (Filter paper, cellulose acetate, mixed cellulose ester, Nylon and Immobilon-FL).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Metsulfuron-methyl determination in environmental samples by solid surface fluorescence

Alesso

Almeida

Talio

et al. 2018

Microchemical Journal

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A new environmental friendly methodology for metsulfuron-methyl quantification based on the fluorescent signal enhancement of rhodamine B dye has been developed. A cationic surfactant (cetyltrimethylammonium bromide, CTAB) and an anionic one (sodium dodecylsulfate) were employed to preconcentrate the herbicide using a coacervation phenomenon, in sodium borate buffer medium (pH 9.2). The coacervate phase was collected on a nylon membrane (0.45 μm) and the solid surface fluorescence signal was determined (λexc = 515 nm, λem = 565 nm). Experimental variables that influence on preconcentration step and fluorimetric sensitivity have been studied and optimized using response surface methodology. Under optimal working conditions, a LOD of 0.17 μg L -1 and a LOQ 0.53 μg L -1 was obtained. The zero th order regression calibration was linear from 0.53 to 5.00 μg L -1 . The method showed adequate sensitivity and selectivity, and was applied to the determination of trace amounts of metsulfuron-methyl in environmental water samples. The proposed methodology implies an alternative to traditional techniques for metsulfuron-methyl monitoring using an accessible instrument in control laboratories, Correspondence author

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“…Therefore, a rapid and precise analytical method for the determination of nickel is essentially required for the production control of spoolable reinforced plastic line pipe. Numerous analytical methods were employed for the determination of nickel in different types of matrices including atomic absorption spectrometry [2,3], atomic emission spectrophotometry [4], molecular fluorescence spectroscopy [5], electroanalytical method [6] and spectrophotometry [7,8]. Spectrophotometric methods occupy special position due to their simplicity, less expensive instrumentation and high sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Determination of Nickel in End-Fitting of Spoolable Reinforced Plastic Line Pipe

Shao

2018

MATEC Web Conf.

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Abstract. Spoolable reinforced plastic line pipe will be widely used in the exploitation of acid gas and oil wells. End-fitting is a mechanical device that forms the transition from the spoolable reinforced plastic line pipe to the connector. It was well known that nickel was an important element in the end-fitting. In this paper, a novel spectrophotometric method was described for determination of nickel in the end-fitting of spoolable reinforced plastic line pipe. The method was based on the color reaction between nickel and dimethylglyoxime, which was favored in an alkaline medium, producing a red compound in the presence of ammonium persulfate as an oxidant. Under the optimum reaction conditions the absorption value was proportional to the concentration of nickel in the range of 0.080~0.50% (R2 = 0.9999), and the relative standard deviation was less than 3.0% (n=5). The proposed method was applied successfully to determine nickel in end-fitting of spoolable reinforced plastic line pipe.

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Sequential determination of nickel and cadmium in tobacco, molasses and refill solutions for e-cigarettes samples by molecular fluorescence

Cited by 22 publications

References 37 publications

Metal/Metalloid Levels in Electronic Cigarette Liquids, Aerosols, and Human Biosamples: A Systematic Review

Metal/Metalloid Levels in Electronic Cigarette Liquids, Aerosols, and Human Biosamples: A Systematic Review

Metsulfuron-methyl determination in environmental samples by solid surface fluorescence

Determination of Nickel in End-Fitting of Spoolable Reinforced Plastic Line Pipe

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