+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Ionic strength assay via polyacrylate-ferriferrous oxide magnetic photonic crystals

, : Ionic strength assay via polyacrylate-ferriferrous oxide magnetic photonic crystals. Analyst 140(10): 3368-3374

Convenient reading out and/or determination of ionic strength (IS) is of great significance for both scientific research and real life applications. We presented here a novel method for the rapid and sensitive IS assay based on the electrolyte-induced sensitive wavelength blueshifts of the reflection spectra of polyacrylate capped Fe3O4 magnetic photonic crystals (PA-Fe3O4-MPCs). For HCl, MgSO4 and the common electrolytes corresponding to the salinity of seawater (including NaCl, KCl, MgCl2, CaCl2, Na2SO4 and their mixtures), the PA-Fe3O4-MPCs displayed wavelength blueshifts identical to the total IS of the aqueous solutions, regardless of the kind of above-mentioned electrolytes in the solutions. Besides, the PA-Fe3O4-MPCs exhibited relatively high sensitivity (an average of 294 nm L mmol(-1) in the range of 0.05-0.30 mmol L(-1), and an even higher value of 386 nm L mmol(-1) at 0.05-0.15 mmol L(-1)) and fast response (within 8 s) to the IS of aqueous solutions. The relative standard deviation (RSD) for IS (NaCl, 0.1 mmol L(-1)) was 4.4% (n = 5). The developed method was applied to determine the salinity of seawater samples, and the determined results were validated by the traditional standard chlorinity titration and electric conductimetry method. The recoveries were in the range of 92-104%. The proposed PA-Fe3O4-MPCs based reflectometry method would have great potential for IS and salinity assays.


PMID: 25827462

DOI: 10.1039/c5an00218d

Other references

Rengganis, I.; Susanto, A.Joko., 2017: Pollen Serum Specific IgE Sensitization in Respiratory Allergic Patients in Jakarta, Indonesia. pollens from trees or grasses in Indonesia have a perennial distribution due to the tropical climate. However, pollen allergy has not been well studied. This study aimed to evaluate the profile of pollen IgE sensitization in respiratory allergic p...

Usikova A.A., 1975: Study of the genetic properties of spring barley varieties by use of diallelic crosses report 1. Cytology & Genetics 9(2): 12-16

Hvidberg C.S.hott; Dahl Jensen D.; Waddington E.D., 1998: Ice flow between the Greenland Ice Core Project and Greenland Ice Sheet Project 2 boreholes in central Greenland. Pages 26,851-26,859:

PanKe; LiGuanHong; LiuYong, 2008: Effects of different Chinese herbal additives on growth performance in Taihe silky fowls. One-hundred-and-eighty 1-day-old Taihe silky fowls were randomly allotted to 4 groups with 3 replicates of 15 birds each. The birds were fed with the basal diet (control group), basal diet supplemented with 1.0% Chinese herbal additive prescriptio...

Pybus, F.C., 1930: The Injection Cure Of Hydrocele. British Medical Journal 1(3605): 239-239

Agashe, S.; Gosavi, A.; Jagdale, R.; Pol, J., 2003: Quality assessment program in histopathology: a pilot study from Maharashtra. Histopathology reports are important quality assurance tools and evaluation of pathological diagnoses described in them is an integral part of total quality control and quality improvement program. We describe a program based on slide circulation...

Krulik, R.; Kohout, M., 1962: Elimination of alpha-ketoglutaric acid after administration of pyrazinamide, 1314 Th, and isoniazide. Administration of pyrazinamide and ethioniamide (1314 Th) in doses of 500 mg did not influence elimination in urine of pyruvic or [alpha]-ketoglutaric acids. Isoniazid in a dose of 5 mg/kg increased the elimination of pyruvic acid by 155% and [alp...

Garay R.P.; Rosati C.; Nazaret C.; Esanu A.; Tarrade T.; Braquet P., 1992: Cicletanine sulfate inhibition of anion transport systems and natriuretic activity. In contrast with cicletaine, its urinary sulfoconjugate metabolite (cicletanine sulfate) was active on membrane ion transport in human red blood cells. Cicletanine sulfate was a more potent inhibitor of the Na+ dependent [Cl- /HCO3-] exchanger (IC...

Proctor, Mcf, 1990: Margaret Patricia Whitehouse M.A., Ph.D., Hon. F.R.P.S., A.P.S.A. (1922-1988). Journal of bryology6(2): 315-316

Stephenson, J., 2001: Studies illuminate cause of fatal reaction in gene-therapy trial. JAMA 285(20): 2570-2570