Many biomolecular photothermal therapies in heavy metals detection are expensive and complicated. In this paper, compared to expensive and complex biomolecular photothermal therapy, a new type of coated nanomaterial was used to research Cd in water. We explored the assembly of glutathione-growth gold nanorods through the attachment of sulfhydryl groups on glutathione to the surface of gold nanorods, and studied the optimal incubation conditions for the preparation of Cd by reaction time and temperature. This study expounded the principle using the incubated gold nanorods, and quantitatively determined the content of Cd based on the ($R_0-R)/R_0$ between two plasmon resonance absorption peaks of the gold nanorods. The linear range of the detection of isoniazid was 0.5–5.0$$$\mu$M, and the detection limit was 0.35$$$\mu$M. The recovery rates were 88.2–107.1%, and the results were satisfactory. This gold nanorods quantitative method was sensitive and feasible in Cd research in water environment application.

重金属检测中的许多生物分子光热疗法昂贵且复杂。本文与昂贵且复杂的生物分子光热疗法相比，采用新型涂层纳米材料来研究水中的镉。我们探索了通过将谷胱甘肽上的巯基附着到金纳米棒表面来组装谷胱甘肽生长的金纳米棒，并通过反应时间和温度研究了制备Cd的最佳孵育条件。本研究阐述了利用孵育金纳米棒的原理，并根据(${右}_0-右）/{右}_0$金纳米棒的两个等离子共振吸收峰之间。异烟肼检测线性范围为0.5~5.0$$$\mu$M，检出限为0.35$$$\mu$M.回收率为88.2-107.1%，结果令人满意。该金纳米棒定量方法在水环境镉研究中应用灵敏且可行。