Lead assays with smartphone detection using a monolithic rod with 4-(2-pyridylazo) resorcinol

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Issarangkura Na Ayutthaya P., Yeerum C., Kesonkan K., Kiwfo K., Grudpan K., Teshima N., Murakami H., Vongboot M.

ผู้เผยแพร่: MDPI

ปีที่เผยแพร่ (ค.ศ.): 2021

วารสาร: Molecules (1420-3049)

Volume number: 26

Issue number: 18

หน้าแรก: 5720

นอก: 1420-3049

eISSN: 1420-3049

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85115414642&doi=10.3390%2fmolecules26185720&partnerID=40&md5=4d78d60d9594fdded9da8db87fe67823

ภาษา: English-Great Britain (EN-GB)

ดูในเว็บของวิทยาศาสตร์ | ดูบนเว็บไซต์ของสำนักพิมพ์ | บทความในเว็บของวิทยาศาสตร์

บทคัดย่อ

A monolithic rod of polyurethane foam–[4-(2-pyridylazo) resorcinol] (PUF–PAR) as a simple chemical sensor for lead assays with smartphone detection and image processing was developed. With readily available simple apparatus such as a plastic cup and a stirrer rod, the monolithic PUF rod was synthesized in a glass tube. The monolithic PUF–PAR rod could be directly loaded by standard/sample solution without sample preparation. A one-shot image in G/B value from a profile plot in ImageJ for a sample with triplicate results via a single standard calibration approach was obtained. A linear single standard calibration was: [G/B value] = −0.038[µg Pb2+] + 2.827, R2 = 0.95 for 10–30 µg Pb2+ with a limit of quantitation (LOQ) of 33 µg L−1. The precision was lower than 15% RSD. The proposed method was tested by an assay for Pb2+ contents in drinking water samples from Bangkok. The results obtained by the proposed method agree with those of ICP-OES and with 100– 120% recovery, demonstrating that the method is useful for screening on-site water monitoring. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

คำสำคัญ

Chemical sensor, Monolithic polyurethane foam–[4-(2-pyridylazo) resorcinol], On-site screening, Water monitoring