2] Nonstandard abbreviations: Hb, hemoglobin; CE-HPLC, cation-exchange
high-performance liquid chromatography; Hb S, sickle cell Hb.
HPLC evaluated for presumptive identification of Haemoglobin variants.
Sharma, "Reaction of Ethanol and Formaldehyde: use of Versatile Cation-Exchange
Resins as Catalyst in Batch Reactors and Reactive Distillation Columns," React.
Next, we used a cation-exchange
column to eliminate [Mg.
HPLC separation and isoelectric focusing confirmed the presence of hemoglobin H.
capacity (CEC) of zeolite has also been studied and reported [12, 13].
Strongly acidic cation-exchange
resin, strongly basic anion exchange resin, and mixed bed columns of weakly acidic cation exchange resin and weakly basic anion exchange resin were used with a stevidoside (purity 80-87%) showing recovery of about 79% .
Besides direct vegetational observations, soil profiles are documented, and soil is analyzed for pH and cation-exchange
Bear River zeolite is a natural occurring volcanic rock composed of the mineral clinoptilolite that is a cation-exchange
Helling CS, Chesters G, Corey RB 11964) Contribution of organic matter and clay to soil cation-exchange
capacity as affected by the pH of the saturating solution1.
2) Although electrophoresis at alkaline and acid pH has been widely used for many years, the emergence of cation-exchange
high-performance liquid chromatography, or HPLC, as the method of choice for quantification of HbA2 and Hb Hand identification of Hb variants, (9) streamlined the recommended preliminary and follow-up tests for the identification of hemoglobinopathies and thalassemias, and provided rapid and complete diagnostic work-up in a majority of eases.
Samples were then evaporated to dryness and subjected to the process of acid-dissolution, cation-exchange
, and filament loading described above with the exception of the initial HF and HN[O.
Reversed-phase (RP) and cation-exchange
HPLC are often applied, and the latter enables the quantification of various Hb fractions, including HbF and Hb[A.
This balance is influenced by numerous factors, such as the curing temperature (12), the nature of the curing agent (13), the cation-exchange
capacity of the layered silicate (14) as well as the nature the surface modifier (15).
Zeolites are well known as cation-exchange
materials, providing a convenient way of loading the zeolite with electroactive species.