Microplastic Characterization by Infrared Spectroscopy

Xu, Junli; Hassellöv, Martin; Yu, Keping; Gowen, Aoife

doi:10.1007/978-3-030-10618-8_21-1

Cited by 6 publications

(9 citation statements)

References 94 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Using the siMPle program, all the PE beads (125–150 μm) in the analysis area were identified on the 102 μm stainless-steel mesh filter in transmission mode (Figure ). The μFTIR spectroscopy results shown here further support the application of these filters in identifying microplastics in transmission mode, supporting previous applications of these types of filters. , These results are promising because previous studies either had to account for the IR absorbance of the filter (e.g., refs and ) or preselect putative microplastics using a light microscope followed by μFTIR measurement . The stainless-steel mesh filters are therefore a valuable tool that addresses μFTIR analytical limitations and streamlines data collection for microplastic research.…”

Section: Resultssupporting

confidence: 79%

“…Other approaches include selecting particles of interest and manually moving them from the filters to an IR transparent slide for analysis. , However, microplastics can be friable and statically charged, leading to broken and/or lost particles. One filter type that has been used for microplastic environmental sampling is stainless-steel mesh filters. ,,− Other studies tested using stainless-steel mesh filters for organic matter digestion of the sample or for the μFTIR identification of polymer type. , In this study, we built on that prior work by assessing the use of stainless-steel mesh filters for in-line sample filtration, laboratory processing, and μFTIR analysis in transmission mode for polymer identification.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Peristaltic Pump and Filter-Based Method for Aqueous Microplastic Sampling and Analysis

et al. 2022

View full text Add to dashboard Cite

Sampling the aquatic environment for microplastic concentration is inherently difficult because of variations in microplastic concentration, shape, and density and the potential for contamination. We present an assessment of a method for microplastic sampling that uses a peristaltic pump to pump water through a series of in-line stainless-steel mesh filters. Following filtration, the stainless-steel filters were treated using previously published methods to isolate microplastics, adjusted for the stainless-steel mesh filters. Microplastics were identified using micro-Fourier transform infrared (μFTIR) spectroscopy in transmission mode. This method was tested in the laboratory using standard polyethylene beads and was applied to two sample sites at the Las Vegas Wash in Nevada. The results showed that 70% of the polyethylene beads were recovered after the peristaltic pump and laboratory steps with minimal blank contamination. The advantages of the peristaltic pump sampling method are it (1) supports a range of sample volumes, (2) reduces sample handling, (3) reduces the potential for contamination, (4) provides flexibility in sampling locations, and (5) supports a variety of filter types. Using stainless-steel mesh filters allows for (1) streamlined and direct field-to-laboratory sample processing, (2) μFTIR transmission mode analysis of filter-mounted microplastics, and (3) reduced filter and sample processing costs.

show abstract

Section: Resultssupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

A Peristaltic Pump and Filter-Based Method for Aqueous Microplastic Sampling and Analysis

et al. 2022

View full text Add to dashboard Cite

show abstract

“…This technique was pioneered by Jun-Li Xu in "Microplastic Characterisation by Infrared Spectroscopy", found in the Handbook of Microplastics in the Environment, pp. 1-33, 2020 [21]. The authors provide an extensive account of the multiple approaches employed to analyze microplastics utilizing infrared spectroscopy.…”

Section: Validation and Data Analysis Of Plastic-bottled Chinese Baij...mentioning

confidence: 99%

Quantification of Microplastics in Plastic-Bottled Chinese Baijiu Using Micro-FTIR in Imaging Mode

Zhou,

Wang,

Wang

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

Microplastics (MPs) are prevalent in our environment, being present in the air we breathe and in the food we consume. Due to the widespread use of plastic materials in everyday life, the amount of microplastics being released into the biosphere has become increasingly apparent in recent years. This study provides the first documentation of the presence of microplastics in Chinese baijiu, a popular alcoholic beverage in China, bottled in plastic. It is essential to note the significance of this discovery and potential implications for human health. Analysis of samples collected from the Chinese market showed the presence of microplastics in all six Chinese baijiu brands tested. Concentrations ranged from 172 MPs/500 mL to 944 MPs/500 mL with an average concentration of 436 MPs/500 mL. Cellulose and PA accounted for 70.4% and 17.8% of all microplastics detected, respectively. These were the most commonly detected types. Other types of microplastics were also found, including PET, PP, PVC, and PE. PET accounted for 2.7%, PP for 2.2%, PVC for 1.2%, and PE for 0.1% of all microplastics. The possible sources of contamination include raw materials, ambient air, and equipment and vessels that shed microplastics. Therefore, this study emphasizes the requirement for further research to mitigate the potential hazards associated with human exposure to microplastics. Additionally, it presents significant findings on the presence of microplastics in Chinese baijiu sold in plastic bottles.

show abstract

“…The spectra also differ if measured in transmittance and attenuated total reflectance modes 61 . However, they can identified from few characteristics peaks 61, 62 .…”

Section: Chemical Characterizationmentioning

confidence: 99%

“…These features are found in 10.7% (3/28) particles indicating that the particles are PE type. The poly-ethylene terephthalate (PET) can be identified from the -C=O stretching at around 1710 cm -1 but -C-H stretching frequencies in the range 2900-2970 cm -1 is weakly invisible 62 . These features are found in 35.7% (10/28) particles suggesting PET microplastics.…”

Section: Chemical Characterizationmentioning

confidence: 99%

Distribution of Microplastic Contamination in Sapta-Gandaki River System, Nepal

Kandel,

Adhikari,

et al. 2023

Preprint

View full text Add to dashboard Cite

Microplastic (MP) contamination has been reported in many Rivers worldwide. However, there is an increasing concern regarding data quality, particularly in the studies that do not account for positive and negative controls. Additionally, spatiotemporal distribution of MP in transboundary Himalayan River is underexplored. Here, we report spatiotemporal distribution of MP in the second largest river of Nepal; Sapta-Gandaki River system which is 810 km long starting from Himalayan headstream to the Ganges with a catchment area of 46,300 km^2. A total of 120 integrated water samples were collected in pre and post monsoons from 30 sites (2850-140 masl) along three tributaries of Saptagandaki River. The MP data were corrected for procedural blanks (n=23) and positive controls (n=18). We found that the MPs count (cut off size ≥30μm) in pre (dry) monsoon time was significantly higher (61.2±27.8 MP/L, p<0.01) than in post monsoon (winter) time (24.7±10.8 MP/L). High count was observed in the sites near major cities and highways. A gradual increase in MPs count was observed as the River stretches up to downstream (r=-0.6). The shape, size, and color dominance were fragments>pellets>fibers, 30-100>100-250>250-500>500-5000µm, blue>black>transparent; respectively. Most MP particles consisted of polyethylene terephthalate, cellophane, polyethylene, polyvinyl chloride type material. Annual flux discharge calculation showed that Saptagandaki River discharges 0.7×10^8 MP/s. The findings of this study provide baseline data for MPs contamination in one of the major Himalayan River water systems of Nepal and the data could be useful to identify potential control measures.

show abstract

Microplastic Characterization by Infrared Spectroscopy

Cited by 6 publications

References 94 publications

A Peristaltic Pump and Filter-Based Method for Aqueous Microplastic Sampling and Analysis

A Peristaltic Pump and Filter-Based Method for Aqueous Microplastic Sampling and Analysis

Quantification of Microplastics in Plastic-Bottled Chinese Baijiu Using Micro-FTIR in Imaging Mode

Distribution of Microplastic Contamination in Sapta-Gandaki River System, Nepal

Contact Info

Product

Resources

About