Microfluidic Paper-based Analytical Device for Quantification of Lead Using Reaction Band-length for Identification of Bullet Hole and Its Potential for Estimating Firing Distance

Autor:	Prapin Wilairat, Phoonthawee Saetear, Warawut Tiyapongpattana, Supatana Buking, Nuanlaor Ratanawimarnwong, Kanchana Uraisin, Duangjai Nacapricha
Rok vydání:	2018
Předmět:	Filter paper Channel (digital image) 010405 organic chemistry Gunshot residue Chemistry 010401 analytical chemistry Microfluidics Streak Paper based 01 natural sciences Sample (graphics) 0104 chemical sciences Analytical Chemistry Composite material Lead (electronics)
Zdroj:	Analytical sciences : the international journal of the Japan Society for Analytical Chemistry. 34(1)
ISSN:	1348-2246
Popis:	A low-cost and user-friendly microfluidic paper-based analytical device (μPAD) was developed for identification of bullet hole from gunshot residue (GSR) on cotton fabric target. The device (25 × 82 mm) is made of filter paper with a printed pattern consisting of a circular sample loading reservoir (6 mm i.d.), a circular waste reservoir (4 mm i.d.) and a straight flow channel (3 mm wide and 60 mm long). A sticker with a ruler scale in millimeters was mounted alongside the channel. The straight channel is first impregnated with rhodizonate and dried at ambient temperature. Tartrate extract of the target fabric is loaded on the sample reservoir. If Pb(II) ions are present in the extract, pink streak of Pb(II)-rhodizonate precipitate is formed as the sample solution flows from the reservoir along the channel. The length of the pink strip is employed to estimate the firing distance.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8dabd2de9124a2e248e6bfba871cd31 https://pubmed.ncbi.nlm.nih.gov/29321464 Zobrazit plný text záznamu Full text from SpringerLink