Topic
Calibration curve
About: Calibration curve is a research topic. Over the lifetime, 6552 publications have been published within this topic receiving 95128 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, a two-way structural analysis of the accurate calibrations of 12 platinum resistance thermometers in the temperature range 2.5 to 14 K is presented. But the accuracy of these calibrations depends on the altitude of the thermometer.
Abstract: Calibration procedures are developed for platinum resistance thermometers in the temperature range 2.5–14 K. Two recommended methods require calibration points at the boiling point of liquid helium (4.215 K) and the triple point of hydrogen (13.81 K); in addition, the first method requires a point at 7.201 K while the second method requires the slope of the calibration curve at 13.81 K. For temperatures from 3.5 to 14 K, the calibrations are accurate to within 0.01 K for the first method and 0.025 K for the second method. For temperatures from 2.5 to 3.5 K, the calibrations are somewhat less accurate. Therefore, if a thermometer has been calibrated for temperatures of 13.81 K and above, its calibration may be easily extended to lower temperatures with sufficient accuracy for many applications. These calibration procedures were developed from two‐way structural analysis of the accurate calibrations of 12 platinum resistance thermometers.
63 citations
TL;DR: A fast, simple, inexpensive, sensitive, efficient and environmental friendly direct ultrasound-assisted dispersive liquid-liquid microextraction (DUSA-DLLME) procedure has been developed to concentrate five nitroaromatic explosives from water samples prior to quantification by gas chromatography-mass spectrometry (GC-MS).
63 citations
TL;DR: In this paper, the use of laser-induced plasma spectrometry (LIPS) for quantitative analysis of Al, Cu, Fe, Pb and Sn components in solid zinc alloys is evaluated.
Abstract: In this paper the use of laser-induced plasma spectrometry (LIPS) for
the quantitative analysis of Al, Cu, Fe, Pb and Sn components in solid
zinc alloys is evaluated. Laser-induced plasmas are characterized using
spectroscopic diagnostic techniques that yield the excitation temperature
and electron density. Optimal experimental conditions for analysis are
evaluated, including time gating parameters and distance from focusing
lens to target where it is found that the focus of the laser beam should
be positioned behind the target in order to prevent secondary air plasmas
from forming in front of the target. Calibration curves are produced for
several analytical lines, and the analytical performance of the technique
is assessed. While low detection limits (<60 ppm) are found, the
precision of measurement could be improved.
63 citations
TL;DR: In this article, an electrochemical method for the measurement of the effective concentration of surfaceactive substances of natural and synthetic origin in natural waters is described based on the suppression by surfactants of the polarographic streaming maximum occurring on the reduction wave of Hg(II) in aqueous solution.
63 citations
TL;DR: Well-type high-purity germanium (HPGe) detectors are well suited to the analysis of small amounts of environmental samples, as they can combine both low background and high detection efficiency.
63 citations