Research Article
A Panax notoginseng Root Tip Meristem Biosensor and Its Sensing Kinetics for Five Important Nitrogen Nutrients
Figure 4
Current change rates of biosensors constructed with P. notoginseng root tip meristems of different ages in sensing sodium nitrate solutions within the set concentration range. The response current change rate in sensing sodium nitrate at 10−22–10−11, 10−23–10−12, and 10−21–10−10 mol/L by using the biosensors constructed with the root tip meristems of two-year-old P. notoginseng (a), three-year-old P. notoginseng (b), and four-year-old P. notoginseng (c), respectively.
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