Flow rate exhibited significant effects on retention time
, peak area and peak height of analytes.
Even though the method was developed for amino acids, we did not detect interference or overlapping peaks from dipeptides with retention times
or m/z values similar to those of amino acids (Gin, Gly-Ala, Ala-Gly; Asn, Gly-Gly) at concentrations 2 400 times higher than the potential soil solution concentrations of amino acids and dipeptides (20 [micro]mol [L.sup.-1] injected on the column) (Jamtgard et al.
TCA not only improves peak shape and retention time
of TBM but also increases MS signal intensity of TBM.
For the hydraulic retention time
of 24 h, the removal of chlorpyrifos was below to the detection limit (10 [micro]g [L.sup.-1]), implying an efficiency greater than 99% for the [CW.sub.C], [CW.sub.M], [CW.sub.K] and [CW.sub.T].
By obtaining each LogD value for each compound and its experimental value of the retention time
obtained through the chromatogram, a regression was performed and the characteristic equation of each chromatogram was obtained.
If these are updated annually, the schedule could delete the term "superseded" and add one year to the desired retention time
since the revised and updated policies are essentially new records.
The retention times
of PHZ, PCA and PYO were detected from the standard as well as from samples at 41.896, 39.764 at 250 and 34.895 min at 262 nm respectively (Figs.
Hb variants that elute with same retention time
also cannot be separately identified by HPLC.
Damage or loss of the whip antennas was common in our study, and the likelihood of damage occurring increased dramatically with increasing retention time
. Baker (2006) reported similar rates of antenna damage (61%) for ATS model 3530.
Together with the long retention time
, the established three-dimensional mixing principle of the BHS-Sonthofen twin-shaft mixer makes an important contribution to achieving good results: The lime is mixed intensively with the clay so that the treated clay reliably separates from the rock.
The goal of the experiments was to predict the retention time
much more precisely to start optimization of separation.
In all the retention time
periods the maximum biogas production, degradation of TS as well as VS was observed in the digester -4 (70% CD + 30% PW).