For many natural waters, a measurement of molybdate-reactive silica by this test method provides a close approximation of total silica, and, in practice, the colorimetric method is frequently substituted for other more time-consuming techniques.
12.
A successful application of the AuNP-colorimetric method to clinical diagnosis reported by " Baptista et al " . was the sensitive detection in clinical samples of " Mycobacterium tuberculosis ", the human tuberculosis etiologic agent.
