trace contamination

Trace metal contamination in sediments of the Pearl River Estuary and the surrounding coastal area, South china;

华南珠江入海口及其周边海岸地区沉积物中痕量金属元素污染；

The new method and instrument with the technology of Surface Plasmon Resonance ( SPR) for the water trace contamination is a cross-research on multi-disciplines.

将表面等离子共振（SPR）检测技术应用于生态环境痕量污染物检测新方法、新仪器的研究，是一项多学科交叉的研究课题。

First, I analysed the trace, poisonous organic contamination, both qualitatively and quantitatively, by mass spectrometry ( GC/ MS) and gas chromatography, using an electron capture detector ( GC/ μ-ECD).

首先，利用化学仪器（GC-MS和GC-μECD）分析方法，根据不同的色谱条件对有机有毒微污染物进行了定性和定量分析，确定了这些物质的种类和浓度。