Strong ionic Be II emission doublet at 313.01 and 313.04 nm in Laser-Induced Plasma (LIP) is well known for trace beryllium quantities analysis. Still, being a resonance line, it suffers from strong self-absorption (SA) starting from very low concentration levels, approximately at 0.005% (50 ppm). It makes this doublet unsuitable for Be evaluation at higher concentrations, typical for minor (0.1–1.0%) or major (≥1.0%) levels, such as in Be bearing minerals and alloys. Quantitative analysis of Be at elevated concentrations may be accomplished using BeO molecular emission previously not used for analytical purposes in LIP. These molecules are characterized by very intensive blue-green emission series located mainly in the 470–480 nm spectral range. In our experimental setup, molecular BeO emission demonstrates a Limit of Detection (LoD) near 0.05% of BeO at Single Pulse (SP) and 0.01% at Double Pulse (DP) modes. The absence of SA for BeO molecular emission is presently proved in the 0.05–5.0% range, which is quite suitable for minerals and alloys analysis.

激光诱导等离子体 (LIP) 中 313.01 和 313.04 nm 处的强离子 Be II 发射双峰是众所周知的痕量铍量分析。尽管如此，作为一条共振线，它从非常低的浓度水平开始，大约在 0.005% (50 ppm) 时会受到强自吸收 (SA) 的影响。这使得这种双峰不适用于较高浓度的 Be 评估，通常用于次要 (0.1–1.0%) 或主要 (≥1.0%) 水平，例如在含 Be 矿物和合金中。可以使用以前未用于 LIP 分析目的的 BeO 分子发射来完成高浓度 Be 的定量分析。这些分子的特点是非常强烈的蓝绿色发射序列，主要位于 470-480 nm 光谱范围内。在我们的实验设置中，分子 BeO 发射表明检测限 (LoD) 接近 0。05% 的 BeO 在单脉冲 (SP) 和 0.01% 在双脉冲 (DP) 模式。目前证明在 0.05-5.0% 范围内不存在用于 BeO 分子发射的 SA，这非常适合矿物和合金分析。