title: A highly facile and selective Chemo-Paper-Sensor (CPS) for detection of strontium.
abstract: Chemosensors have attracted increasing attention for their usefulness on-site detection and monitoring. In this study, we elucidated a novel, facile, and highly selective Chemo-Paper-Sensor (CPS) for detection and monitoring of strontium (Sr(2+)) ions, which means a potent colorimetric sensor based on a Chrysoidine G (CG)-coated paper strip. The CPS for highly selective colorimetric detection of strontium ion was handily analyzed to determine the red-green-blue (RGB) value using portable devices such as desktop digital scanner and mobile phone camera, quantitatively. Interestingly, an orange to dark orange color transition was observed when the aqueous and solid paper colorimetric sensor was introduced to Sr(2+) ion, respectively. It was demonstrated that the value of the signal has a linear relationship with concentrations of the strontium in the 500 ppm to 100 ppb range with a detection limit of 200 ppb. We believe that a newly developed Chemo-Paper-Sensor will be useful in a wide range of sensing applications.
authors.affiliation: Biotechnology Research Division, Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), 29 Geumgu-gil, Jeongeup, Jeonbuk, 56212, South Korea; Department of Chemical Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, South Korea.
authors.forename: Sung-Min
authors.initials: SM
authors.lastname: Kang
authors.affiliation: Biotechnology Research Division, Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), 29 Geumgu-gil, Jeongeup, Jeonbuk, 56212, South Korea; Department of Biological Engineering, Biohybrid Systems Research Center (BSRC), Inha University, 100 Inha-ro, Incheon, 22212, South Korea.
authors.forename: Sung-Chan
authors.initials: SC
authors.lastname: Jang
authors.affiliation: Department of Biological Engineering, Biohybrid Systems Research Center (BSRC), Inha University, 100 Inha-ro, Incheon, 22212, South Korea. Electronic address: yunsuk.huh@inha.ac.kr.
authors.forename: Yun Suk
authors.initials: YS
authors.lastname: Huh
authors.affiliation: Department of Chemical Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134, South Korea. Electronic address: rhadum@cnu.ac.kr.
authors.forename: Chang-Soo
authors.initials: CS
authors.lastname: Lee
authors.affiliation: Biotechnology Research Division, Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), 29 Geumgu-gil, Jeongeup, Jeonbuk, 56212, South Korea; Radiation Biotechnology and Applied Radioisotope Science, University of Science & Technology (UST), 217 Gajeong-ro, Daejeon, 34113, South Korea. Electronic address: chroh@kaeri.re.kr.
authors.forename: Changhyun
authors.initials: C
authors.lastname: Roh
mesh_terms: D003124:Colorimetry; D007477:Ions; D057230:Limit of Detection; D010209:Paper; D013324:Strontium / Q000032:analysis* / Q000737:chemistry; D014867:Water; D010128:p-Aminoazobenzene / Q000031:analogs & derivatives* / Q000737:chemistry
chemical_list: D007477:Ions; D014867:Water; C005562:chrysoidine; D010128:p-Aminoazobenzene; D013324:Strontium
keywords: Chemo-Paper-Sensor; Detection; Fabrication; Paper strip; Strontium