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The alkaloids present in the URE were identified by high performance liquid chromatography-mass spectrometry (HPLC-MS) using an Agilent 1260 HPLC system equipped with an Agilent 6400 MSD (USA) with the electrospray source operated in the positive ion mode.
Technique Note LOD ([micro]g Application or Method [L.sup.-1]) (matrix) SW-AdsCSV Phosphate 0.18 Natural and buffer effluent water solution; HMDE Differential 0.01 mol 0.02 Pharmaceutical Pulse [L.sup.-1] NaOH, formulations Polarography MFE (mercury and milk film electrode) ELISA method -- 20.0 Milk HPLC-MS -- 1.0 and 2.0 Milk and honey HPLC-MS Liquid/ liquid 17.5 Milk or solid phase extraction Diferential 0.01 mol 0.51 Urine Pulse [L.sup.-1] NaOH; Polarography SMDE (Static Mercury Drop Electrode) Molecular Pharmaceutical Fluorescence -- 3.05 formulations Spectroscopy and human plasma Technique Note Ref.
Comparison were made as to retention time and the mass spectrum data from both GC-MS and HPLC-MS analysis.
This stability indicating analytical method can be adapted easily to analyse RHT in pharmaceutical formulations and biological matrices and for the future use in HPLC-MS analysis.
Descriptive analysis for screening the goats using the KIS tests and the identification of the specific antibiotics using HPLC-MS were performed.
HPLC-MS analysis after 90 min reaction and acidification at pH 2 revealed a complex crude in which the species with the expected mass was present but in such low amounts and purity to render workup unfeasible.
After 3, 6, 10, 20, and 30 days an aliquot of 1 mL water was taken and analyzed by HPLC-MS. To ensure that leaching does not stop merely due to the development of an equilibrium between the surface and the bulk water, a further experiment was performed, where samples with a total area of ~25 [cm.sup.2] and a weight of 0.8-1.2 g were placed in 5 mL Millipore water at 50[degrees]C.
Table 1: Precision, accuracy, recovery, and matrix effect of HPLC-MS method for analysis of analytes and IS (n = 8).
HPLC-MS: m/z = 560.3 [[M+H].sup.+], (calcd 558.38 for [C.sub.29][H.sub.45]N[O.sub.2]Sn).
In addition to these dermatological studies, the extractable and bio available amount of the crosslink chemical residues (photoinitiator and thiol) in UV precured latex gloves was investigated with analytical techniques such as high performance liquid chromatography coupled with mass spectroscopy (HPLC-MS) and elementary analyses.
The pump is ideal for backing turbo pumps in corrosive gas RGA, MALDI-TOF, HPLC-MS, or any time application demands a quiet, oil-free rough vacuum pump.The unit reaches 375 micron (.375 Torr / 0.5 mbar) for roughing or backing applications without pump oil.
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