Boron Determination—A Review of Analytical Methods

摘要: This paper reviews published methods of sample preparation, determinand purification, and the determination boron concentration isotopic composition in a sample. The most common for B are spectrophotometric plasma-source spectrometric methods. Although based on colorimetric reactions with azomethine-H, curcumin, or carmine, other fluorometric have also been used to some extent. These methods, general, suffer from numerous interferences low sensitivity precision. Application nuclear reaction atomic emission/absorption (AES/AAS) has remained limited because these poor serious memory effects interferences. Among large number only prompt-γ spectrometry practical use. method can determine intact samples, which makes this especially useful medical applications, including neutron capture therapy. However, is time-consuming not suitable detection levels B. Inductively coupled plasma optical emission (ICP-OES) created new dimension its simplicity, sensitivity, multielement capability. it suffers adequately sensitive nutritional applications involving animal tissues that naturally All measurement require mass spectrometer. Thermal ionization (TIMS) secondary ion (SIMS) measure B; however, time consuming extensive preparation purification. Development inductively (ICP-MS) overcame drawbacks earlier but capabiltiy measuring isotopes made possible (1) by isotope dilution, (2) verification fingerprinting routine analysis, (3) total ratio biological tracer studies same run. Therefore, source MS appears be choice among present-day technologies.