Karen A. Wolnik

Analysis of undeclared synthetic phosphodiesterase-5 inhibitors in dietary supplements and herbal matrices by LC–ESI–MS and LC–UV

Samuel R. Gratz, Cheryl L. Flurer, Karen A. Wolnik · Journal of Pharmaceutical and Biomedical Analysis · 2004 · 175 citations

Dietary Supplements, Pharmaceutical Science, Biochemistry +10

Elements in major raw agricultural crops in the United States. 1. Cadmium and lead in lettuce, peanuts, potatoes, soybeans, sweet corn, and wheat

Karen A. Wolnik, Fred L. Fricke, Stephen G Capar et al. · Journal of Agricultural and Food Chemistry · 1983 · 147 citations

Metal Contamination, Agricultural Economics, Altmetric Attention Score +18

Arsenic speciation by ion chromatography with inductively coupled plasma mass spectrometric detection

Brenda S. Sheppard, Joseph A. Caruso, Douglas T. Heitkemper et al. · The Analyst · 1992 · 142 citations

Elements in major raw agricultural crops in the United States. 3. Cadmium, lead, and eleven other elements in carrots, field corn, onions, rice, spinach, and tomatoes

Karen A. Wolnik, Fred L. Fricke, Stephen G Capar et al. · Journal of Agricultural and Food Chemistry · 1985 · 131 citations

Engineering, Botany, Agricultural Economics +22

Elements in major raw agricultural crops in the United States. 2. Other elements in lettuce, peanuts, potatoes, soybeans, sweet corn, and wheat

Karen A. Wolnik, Fred L. Fricke, Stephen G Capar et al. · Journal of Agricultural and Food Chemistry · 1983 · 78 citations

Nutrition, Agricultural Economics, Altmetric Attention Score +20