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of 12
pro vyhledávání: '"520"'
Autor:
Lurong Xu, Xiaotong Zhou, Gaoshang Du, Dongwei Zhang, Bing Xia, Lumei Wang, Shijian Wu, Xuan Ni, Shenshan Zhan
Publikováno v:
Microchimica Acta. 183:2251-2258
The authors describe an aptasensor for the detection of the gonadal hormone progesterone (P4) in aqueous solution. Gold nanoparticles (AuNPs) were coated with a P4-specific aptamer, and such particles do not aggregate in presence of NaCl due to the p
Publikováno v:
Microchimica Acta. 188
A short ssDNA (Apt-21) rationally truncated from the parent 100 nt As(III) aptamer was used for colorimetric determination of As(III). Apt-21 serves dual functions, i.e., recognition of trace As(III) and regulation of AuNPs dispersion by surface atta
Publikováno v:
Microchimica Acta. 187
As a first of its kind, we developed a highly sensitive colorimetric nanoprobe for phytic acid (PA) and Fe(III) ion detection based on 4-mercaptophenol (4MP) and thioglycolic acid (TGA)-functionalized gold nanoparticles {AuNPs@(4MP-TGA)}. AuNPs were
Publikováno v:
Microchimica Acta. 184:4305-4312
The authors describe a new kind of adenosine triphosphate (ATP) assay. It is based on the use of gold nanoparticles (AuNPs) coated with 4-mercaptophenylboronic acid (MPBA) as the recognition element for ATP. MPBA has a specific affinity for AuNPs thr
Publikováno v:
Microchimica Acta. 184:4203-4208
The authors describe a colorimetric assay for the determination of the iron chelating drug deferiprone by using water dispersible silver nanoparticles functionalized with pyrophosphate groups (Pyro-AgNPs). The pyro-AgNPs are capable of cooperatively
Publikováno v:
Microchimica Acta. 183:3087-3092
Carbon dots (C-dots) were prepared in aqueous solution by a one-step ultrasonic approach, and the absorption and fluorescence spectra were acquired. It is found that acidic solutions of potassium permanganate cause C-dots to produce green and red che
Autor:
Seyed Mohammad Taghdisi, Mohammad Hassanzadeh Khayyat, Bibi Sedigheh Fazly Bazzaz, Khalil Abnous, Vahid Soheili, Mohammad Ramezani
Publikováno v:
Microchimica Acta. 183:1687-1697
Aptamers specific for the antibiotic streptomycin were identified by a modified SELEX procedure that employs magnetic beads. After eight rounds of selection, twenty-six aptamers were identified and clustered into seven groups according to similaritie
Publikováno v:
Microchimica Acta. 183:749-755
The article describes sensitive and selective homogeneous immunoassays for the liver cancer biomarker alpha-fetoprotein (AFP) in human serum by using single wavelength excitation fluorescence cross-correlation spectroscopy (SW-FCCS). Both competitive
Publikováno v:
Microchimica Acta. 185
The authors describe a rapid, sensitive and selective colorimetric assay for sialic acid (SA) based on the use of gold nanoparticles (AuNPs) modified with 3-aminophenylboronic acid (3-APBA) which acts as the recognition probe for SA. 3-APBA contains
Publikováno v:
Microchimica Acta. 185
A method is described for the determination of the pesticide chlorothalonil (CLT). It is based on the finding that citrate-capped gold nanoparticles (AuNPs) undergo aggregation on exposure to chlorothalonil. This is accompanied by a visually detectab