Detection of gold nanoparticles with different sizes using absorption and fluorescence based method

Growing world demand for gold and decreasing discovery rates of ore deposits necessitates new techniques for gold exploration. Current techniques for the detection of ppb level of gold, such as inductively coupled plasma mass spectrometry (ICP-MS) are not field-deployable. By contrast, current portable device such as X-ray fluorescence (XRF) based sensors are not sufficiently sensitive. Thus, there is growing interest in developing a new,...