Aqueous ruthenium detection by microwave-assisted laser-induced breakdown spectroscopy

Aqueous ruthenium was detected in real-time under ambient conditions using microwaveassisted laser-induced breakdown spectroscopy(MW-LIBS).A 10 mJ laser energy and 750 W microwave power were directed at an open liquid jet sample of ruthenium.It was observed that,for liquid flow,the coupling efficiency between the microwave and the laser-induced plasma was limited to 43%.The improvement in the ruthenium’s signal-to-noise ratio with MW-LIBS,with respect to LIBS,was 76-fold.Based on MW-LIBS,the limit of detection for aqueous ruthenium was determined to be 957±84 ppb.

Cary 3500多池紫外-可见分光光度计用于蛋白质分析的优势

提高极小体积样品定性和定量测量的效率和重现性//紫外-可见分光光度计测量为样品的质量控制检查提供了一种快速可靠的方法。它们还可用于计算比活性或估算纯化后的产率,并鉴定含有蛋白质和氨基酸的组分。