Characterisation of Feedstocks - D6 Final Report (Phase 1) - Appendix 11: Null Hypothesis Tables

This document describes the null hypothesis values for all five feedstocks in terms of moisture content, net and gross calorific value, dry ash content and its variability, dry nitrogen content, dry chlorine, barium, beryllium, chromium, cobalt, copper, molybdenum, nickel, vanadium, zinc, arsenic, antimony, mercury, cadmium, lead, fluorine, bromine, aluminium, calcium, iron, potassium, manganese, sodium, phosphorus, silicon and titanium content. This document is one of the 13 appendices to the Final Report from the first Phase (2015/16) of the Characterisation of Feedstocks (CofF) project, the primary purpose of which is to provide an understanding of UK produced biomass properties, how these vary and what causes this variability. The purpose of this report plus its related parts is to report the variability in feedstock properties of UK produced energy biomass, the causes of these variations and the relationship between the feedstock properties and the provenance data collected. Five feedstocks were studied: Miscanthus, willow short rotation coppice (SRC), poplar SRC, poplar grown as short rotation forests (SRF), and spruce SRF, with poplar and Sitka spruce selected to represent broadleaved and coniferous biomass crops respectively. Provenance data include site properties (such as general climate zone and soil chemistry), the conditions at the time of sample collection, and past management of the site and crop with soil samples also collected for analysis. The feedstock samples were analysed in UKAS accredited laboratories.本文件阐述了五种原料的零假设（null hypothesis）值，涉及指标包括水分含量、净热值与总热值、干灰分含量及其波动情况、干基氮含量，以及干基氯、钡、铍、铬、钴、铜、钼、镍、钒、锌、砷、锑、汞、镉、铅、氟、溴、铝、钙、铁、钾、锰、钠、磷、硅与钛的含量。 本文件为「原料特性表征（Characterisation of Feedstocks, CofF）」项目第一阶段（2015/16年）最终报告的13个附录之一，该项目的核心目标是厘清英国本土生产的生物质的特性、其波动规律及波动成因。 本报告及其关联附件的核心目标在于阐述英国产能源生物质原料的特性波动情况、波动成因，以及原料特性与所采集的溯源数据之间的关联。 本次研究涵盖五种原料：芒草、柳树短轮伐矮林（Short Rotation Coppice, SRC）、杨树短轮伐矮林（SRC）、杨树短轮伐林（Short Rotation Forest, SRF），以及云杉短轮伐林（SRF）；其中选取杨树与西特卡云杉分别代表阔叶与针叶类生物质作物。 溯源数据涵盖地块属性（如通用气候分区与土壤化学特性）、样本采集时的现场条件，以及地块与作物的既往管理情况，同时还采集了土壤样本用于相关分析。 本研究的原料样本均在英国皇家认可委员会（UKAS）认可的实验室完成检测。