Bioaccessibility performance data for fifty-seven elements in guidance material BGS 102

Abstract

BGS 102, a guidance material for bioaccessible arsenic (As) and lead (Pb), was produced during validation of the in vitro Unified Bioaccessibility Method (UBM). This paper reports a compilation of reproducible bioaccessible guidance values for fifty-five additional elements in BGS 102, providing guidance for analysts to broaden the scope of UBM analyses for a wider range of elements based on data collected over an average of 60 separate analytical batches per element. Data are presented in categories for both gastric (STOM) and gastrointestinal (STOM+INT) extraction phases, where reproducibility, measured as relative standard deviation (RSD) was; ≤10% RSD for 27 elements (Mg,

Hydroponic Production of Reduced-Potassium Swiss Chard and Spinach: A Feasible Agronomic Approach to Tailoring Vegetables for Chronic Kidney Disease Patients

“…In fact, the Na released from the vegetable matrix during the digestion process was very low with respect to the Na present in the blank sample. This is probably related to reagents used in this protocol, as reported also by other authors [22]. The K, Mg, Ca, and oxalate contents in digested fluid were determined by the same protocol as that used for determination of ions in the vegetable material.…”

Elemental composition of Malawian rice

“…Subsequent total elemental analysis was carried out by inductively coupled plasma mass spectrometry (ICP-MS; Agilent 7500cx, Santa Clara, USA) using (i) collision cell mode (helium gas) for Li, Be, B, Na, Mg, Al, P, S, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, As, Rb, Sr, Y, Zr, Nb, Mo, Ag, Cd, Sn, Sb, Cs, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Tl, Pb, Bi, Th and U; and (ii) hydrogen reaction cell mode for Si and Se (Hamilton et al 2015;. Iodine analyses were undertaken separately owing to the requirement for an alkaline extraction with tetramethylammonium hydroxide (TMAH).…”

Contribution of strontium to the human diet from querns and millstones: an experiment in digestive strontium isotope uptake

“…This study also employs the in vivo validated unified bioaccessibility method (UBM) developed by the Bioaccessibility Research Group of Europe (BARGE) for examining the bioaccessible inorganic components in soils (Hamilton et al . ). The UBM simulates the human digestive system in vitro , including digestive fluids, body temperature, timings at each stage of, and agitation produced by, the digestive system.…”

“…Bioaccessibility extractions were undertaken according to the method outlined in Hamilton et al . () within the Inorganic Geochemistry Laboratories at the BGS (Keyworth). Briefly, 0.6 ± 0.01 g of the ground rock sample (< 250 μm fraction) were accurately weighed into 85 ml Nalgene ® oak ridge tubes (ThermoScientific, UK).…”