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激光探针等离子体质谱可对锆石进行快速准确的Ｐｂ－Ｐｂ同位素定年。本文进一步探讨了该方法应用中的几个问题。对不同样品采用不同的聚焦方式可以对Ｕ／Ｐｂ分异有一定的控制作用。在一定的条件下，不连续和连续采样模式都可以得到较高精度和准确度的结果。连续采样模式还可以得到同位素计数的深度剖面。不同的测量滞留时间会影响测量结果的精度。２０ｍｓ为适合锆石２０７Ｐｂ／２０８Ｐｂ分析的最佳测量滞留时间。在对测定结果进行校正时，可以采用玻璃标样ＮＩＳＴ６１０和钻石标样两种不同的校正方法。
Laser probe plasma mass spectrometry can rapidly and accurately determine zircon Pb-Pb isotope dating. This article further explores the application of the method of several problems. Different samples using different focusing methods can have a certain control of U / Pb differentiation. Under certain conditions, discontinuous and continuous sampling mode can get higher accuracy and accuracy of the results. Continuous sampling mode can also get the depth profile of isotope counting. Different measurement residence time will affect the accuracy of measurement results. 20ms is the best measurement residence time for zircon 207Pb / 208Pb analysis. Calibration of the measurement results, you can use the glass standard NIST610 and diamond standard two different calibration methods.