Trace Elements Composition of Boletus Mushrooms from the Province of Yunnan, China
Bibliographic record
Abstract
This study presents data on 20 metallic and semi-metallic elements in three species of the genus Boletus (B.luridus, B. magnificus and B. tomentipes) determined by inductive coupled plasma -dynamic reactive cell -mass spectrometry (ICP-DRC-MS) and cold vapour -atomic absorption spectroscopy (CV-AAS). MethodsIn total, 24 specimens of B. luridus, 38 of B. magnificus, 38 of B. tomentipes were collected in Yunnan (one sample of B. tomentipes was also from the province of Sichuan).They were separated into caps and stipes, than prepared and pooled respectively and examined.Fresh mushrooms directly after pickup were cleaned up from any visible plant vegetation and soil debris with a plastic knife and the bottom part of stem was cutoff, and further rinsed with deionized water.Thereafter, the mushroom samples were placed into plastic basket of an electrically heated commercial dryer (dehydrator for vegetables etc.) and dried at 65 C to constant mass.Dried fungal materials were pulverized in a porcelain mortar and kept in sealed polyethylene bags under dry conditions.Before digestion with nitric acid, the samples were dried at 65 C for 12 h using an electrically heated laboratory oven.The elements such as Li, V, Cr, Mn, Co, Ni, Cu, Zn, As, Rb, Sr, Ag, Cd, Sb, Cs, Ba, Pb, Tl, U were determined using the ELAN DRC II ICP-MS Inductively Coupled Plasma Mass Spectrometer (PerkinElmer, SCIEX, Canada) equipped with a Meinhard concentric nebulizer, cyclonic spray chamber, dynamic reaction cell, Pt cones and quadruple mass analyzer. ResultsLithium concentrations in caps were from 0.150.09to 0.610.43mg kg -1 dry biomass (db), while median values showed on similar content of this element in the caps of all three species (p > 0.05; Mann -Whitney U test).Rubidium in caps of Boletus mushrooms was at 9035-460350 mg kg -1 db, and in stipes 567-
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".