concentration

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Related to Concentration measurements: Analytical concentration
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In terms of the C[O.sub.2] concentration measurements, none of the sensors met the accuracy level provided by the manufacturers ([+ or -]30 or [+ or -]50 ppm), and all of them had higher errors than the manufacturer-claimed values.
* Excel[R] file "URB concentrations": details of the concentration measurements
The cleaner basket remained empty as this test examined the effect of flux load on concentration measurement only.
The backward LS model was run retrospectively using these reanalyzed meteorological fields, providing [C.sup.*] fields with a temporal resolution of 3 hours over a period of 14 days prior to the commencement of the sampling for a particular activity concentration measurement.
Depending on the dose and the half-life of the elimination phase of about 60 minutes, the plasma concentration measurements should be limited according to the level of quantification of creatinine.
The main limitations of the classic CO concentration measurement methods have been described (the presence of disturbances and limited analyser sensitivity) thus, application of the multiple line integrated spectroscopy has been proposed within the spectral range of 6370 [cm.sup.-1]-6390 [cm.sup.-1].
The zone's concentration measurements (the plotted series "Zone C" represented by circles) almost match the discharge air ("Discharge C").
The section where sediment concentration measurement was at the distance L = 7.5 m, so the ratio L/h = 7.5/0.35 = 21 was low.
6) in accordance to the results from the regression analysis for the creatinine concentration measurements. However, the study demonstrates that UV-absorbance at the wavelengths, included into the models, gives a good estimate to the removal pattern of the small water soluble nonprotein bound solute creatinine during dialysis.
The term used for this phenomenon is "over-sampling." For example, a 300 [micro]g/[m.sup.3] [PM.sub.10] concentration measurement with an FRM sampler is in reality less than 150 [micro]g/[m.sup.3], and a 50 [micro]g/[m.sup.3] [PM.sub.2.5] concentration measurement with an EPA-approved FRM sampler is likely less than 10 [micro]g/[m.sup.3].
The self-adhesive RedEye patch can be integrated into the surface of sample containers such as blood bags or point of care analysis devices like disposable ventilator oxygen attachments to permit non-invasive, through-the-package oxygen concentration measurements.
This sampler is dropped into a container of test liquid, then taken out and inserted into an XRF instrument, which renders concentration measurements in minutes.

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