An Approach of Laser-Induced Breakdown Spectroscopy to Detect Toxic Metals in Crushed Ice Ball

Agrawal, Rahul; Pathak, Ashutosh; Kumar, Awadhesh; Kumar, Girjesh

doi:10.1155/2013/719483

Cited by 3 publications

(4 citation statements)

References 15 publications

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“…The experimental setup of LIBS consists of a laser source, focusing and collecting optics, a spectrometer that covers a wavelength of 200-975 nm and the detection system. The excitation laser was Q-switched Nd: YAG laser (Continuum Surelite III-10) with a maximum pulse energy of 950 mJ at 1,064 nm with 5 ns pulse duration and repetition rate 1-10 Hz (Agrawal et al, 2013). The short laser pulse was focused with a convex lens of 15 cm focal length to create hightemperature plasma on the surface of the sample.…”

Section: Low Molecular Weight Carbohydratesmentioning

confidence: 99%

“…We have used calibration-free LIBS (CF-LIBS) analysis introduced by Ciucci et al (1999) as it requires no critical reference material for the calibration curve and is based on the assumption that under local thermal equilibrium (LTE) condition, laser-induced plasma is optically thin. Minimum electron density, N e (cm À3 ) at the plasma temperature that ensures a high collision rate for LTE, was given by the formula (Agrawal et al, 2013):…”

Section: Low Molecular Weight Carbohydratesmentioning

confidence: 99%

“…Consequently, the qualitative analysis of these elements was done using NIST Atomic Spectroscopy Database to analyze the spectral lines in the LIBS spectra. The variation in the concentration of elements was investigated based on the fact that peak area (intensity) of the spectral line is directly proportional to the concentration of the elements present in the sample (Agrawal et al, 2013). The calculated mineral concentration using CF-LIBS is reported in Table 3.…”

Section: Assessment Of Antioxidant Activitymentioning

confidence: 99%

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Assessment of antioxidant activity, minerals and chemical constituents of edible mahua (Madhuca longifolia) flower and fruit of using principal component analysis

Singh

Kushwaha

et al. 2020

NFS

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Purpose Flowers and fruits of Madhuca longifolia (Koenig) (mahua) tree are edible and used as traditional Indian medicines. The physicochemical properties of different parts of mahua are investigated. This study aims to estimate the different mineral contents, polyphenols compounds and antioxidant activities by 2,2-diphenyl-1-picrylhydrazyl inhibition, reducing power, free radical scavenging activity using 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) and ferric reducing antioxidant power assays of mahua flower, ripe and unripe fruit. Design/methodology/approach Flavonoids were identified and quantified in yellow flowers and fruits of M. longifolia tree by high-performance liquid chromatography with diode array detector. Low molecular weight carbohydrates were determined by the ICBio scan, a specific method for determining of carbohydrates. Mineral content is determined by laser-induced breakdown spectroscopy (LIBS) and atomic absorption spectroscopy. Physicochemical, nutritional and mineral properties of mahua flower, ripe and unripe fruit were investigated by the statistical approach of principal component analysis (PCA). Findings Ascorbic acid, gallic acid (GA), quercetin and myrcetin were the phenolic compounds identified and quantified in mahua flower and fruit extracts. Sugar profiling of mahua flowers and fruits confirmed the presence of inositol, sorbitol, mannitol, dextrose, fructose, sucrose, raffinose and maltose. The mineral content of Na, K, Mg and Ca was present in quite a good amount in all samples. Total phenolic content (TPC) was significantly high in mahua flower (25.3 ± 1.0 mg GA equivalent/g FW) followed by mahua unripe (15.8 ± 1.0 mg GA equivalent/g FW) and ripe fruit (14.3 ± 1.0 mg GA equivalent/g FW) at p = 5%. In contrast, total flavonoid contents (TFCs) were highest in ripe fruit, then mahua flower and unripe fruit. Positive correlations were predicted by PCA for mahua flower with TPC, antioxidant activity assays and minerals except for Na; ripe fruit with TFC and Na; and unripe fruit with maltose and sorbitol. Originality/value This study demonstrates the application of LIBS for the determination of elements present in the mahua flowers and fruits and reveals that mahua can be a good source of nutrients. Sugar profiling of mahua flower showed that it is a rich source of reducing and non-reducing sugar, proving that mahua flower juice can be used as a natural sweetener in the development of different food products, namely, biscuits, cookies, cake, jam, jelly, juice and squash.

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Section: Low Molecular Weight Carbohydratesmentioning

confidence: 99%

Section: Low Molecular Weight Carbohydratesmentioning

confidence: 99%

Section: Assessment Of Antioxidant Activitymentioning

confidence: 99%

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Assessment of antioxidant activity, minerals and chemical constituents of edible mahua (Madhuca longifolia) flower and fruit of using principal component analysis

Singh

Kushwaha

et al. 2020

NFS

Self Cite

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“…Elemental analysis of any material can be acquired from the emission spectrum of the laser-ablated plasma [5,6]. For many years, this technique has been employed for qualitative as well as quantitative study [7][8][9][10][11][12][13][14][15]. In particular, this technique also showed excellent applications in the analysis of foods [16,17].…”

Section: Introductionmentioning

confidence: 99%

An advanced spectroscopic approach (LIBS in combination with AAS): a steadfast means to probe the elemental composition of monosodium glutamate

Rehan¹,

Rehan²,

Khan³

et al. 2019

Laser Phys.

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The elemental composition of monosodium glutamate (MSG) was probed by engaging a laser-induced breakdown spectroscopy (LIBS) analytical technique. The LIBS spectra of MSG were acquired in air pressure with an appropriate detector (LIBS2000 + , Ocean Optics) with an optical resolution of ~0.06 nm in the spectral range from 220 to 720 nm. Analyses of the acquired LIBS spectra revealed the presence of Ag, Ca, Mg, S and Na in the sample. To maximize the signal to noise ratio in the resulting LIBS spectra, the experimental parameters, such as pulse energy and gate delay, were optimized. The accomplishment of local thermodynamic equilibrium supposition was confirmed by the McWhirter's criterion and in view of the relaxation time, as well as the diffusion length of the atoms in the plasma. For the determination of relative concentrations of detected elements in MSG, we used three LIBSbased approaches, i.e. by setting the concentration of Na as the calibration, by setting the sum of all concentrations as the calibration and by the calibration curve method. The same sample was also subjected to the more standard analytical tool of atomic absorption spectroscopy, and its results were cross-compared with the findings of LIBS to confirm its validity. It was highly encouraging to find that both results were in sound agreement.

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Laser Induced breakdown spectroscopy: A rapid tool for the identification and quantification of minerals in cucurbit seeds

et al. 2017

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An Approach of Laser-Induced Breakdown Spectroscopy to Detect Toxic Metals in Crushed Ice Ball

Cited by 3 publications

References 15 publications

Assessment of antioxidant activity, minerals and chemical constituents of edible mahua (Madhuca longifolia) flower and fruit of using principal component analysis

Assessment of antioxidant activity, minerals and chemical constituents of edible mahua (Madhuca longifolia) flower and fruit of using principal component analysis

An advanced spectroscopic approach (LIBS in combination with AAS): a steadfast means to probe the elemental composition of monosodium glutamate

Laser Induced breakdown spectroscopy: A rapid tool for the identification and quantification of minerals in cucurbit seeds

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