ABSTRACT For many years after the discovery of the two stable isotopes of boron (10B,11B) in 1920 they were not used as tracers in the soil–plant system due to analytical constraints. However, with the advent of inductively coupled plasma mass spectrometry in the early 1980s, it became possible to measure precisely the natural variations of the B isotopes in biological systems. Nevertheless, up to the present time there is very little information in the literature on δ 11B variations in soils, plants, fertilizers and foodstuffs. Therefore, information on the potential of δ 11B as a tracer of B dynamics in natural- and agro-ecosystems remains limited. The relative abundance of the boron isotope (δ 11B) in soils, plants and nutrient sources, and applications of variations in the natural abundance of 11B as a tracer of anthropogenic sources of nitrate contamination of water and the provenance of agricultural products are reviewed.

中文翻译：

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作为陆地生态系统示踪剂的稳定硼同位素 (δ 11B) 的自然变化

摘要 在 1920 年发现硼的两种稳定同位素 (10B, 11B) 多年后，由于分析限制，它们并未在土壤-植物系统中用作示踪剂。然而，随着 1980 年代初期电感耦合等离子体质谱法的出现，精确测量生物系统中 B 同位素的自然变化成为可能。然而，到目前为止，关于土壤、植物、肥料和食品中 δ 11B 变化的文献资料很少。因此，关于 δ 11B 作为自然和农业生态系统中 B 动态示踪剂的潜力的信息仍然有限。土壤、植物和营养源中硼同位素 (δ 11B) 的相对丰度，