Given the tendency of heavy metals to accumulate in soil and plants, the purpose of this study was to determine the contamination levels of Cd, Ni, Pb, and Zn on peppers (leaves and fruit) grown in contaminated soils in industrial centers. For this purpose, we measured the uptake of the four heavy metals by peppers grown in the heavy metal contaminated soils throughout the four growth stages: two-leaf, growth, flowering, and fruiting, and calculated various vegetation indices to evaluate the heavy metal contamination potentials. Electromagnetic waves were also applied for analyzing the responses of the target plants to various heavy metals. Based on the relevant spectral bands identified by principal component analysis (PCA) and random search methods, a regression method was then employed to determine the most optimal spectral bands for estimating the target hazard quotient (THQ). The THQ was found to be the highest in the plants contaminated by Pb (THQ = 62) and Zn (THQ = 5.07). The results of PCA and random search indicated that the spectra at the bands of b₅₇₀, b₆₅₀, and b₇₆₀ for Pb, b₄₀₀ and b₁₀₃₀ for Ni, b₄₀₀ and b₈₈₀ for Cd, and b₅₆₀, b₉₁₀, and b₁₀₅₀ for Zn were the most optimal spectra for assessing THQ. Therefore, in future studies, instead of examining the amount of heavy metals in plants by chemical analysis in the laboratory, the responses of the plants to the electromagnetic waves in the identified bands can be readily investigated in the field based on the established correlations.

考虑到重金属在土壤和植物中积累的趋势，本研究的目的是确定工业中心受污染土壤中生长的辣椒（叶和水果）中Cd，Ni，Pb和Zn的污染水平。为此，我们测量了在整个四个生长阶段（两叶，生长，开花和结实）中生长在重金属污染土壤中的辣椒对四种重金属的吸收，并计算了各种植被指数以评估重金属污染潜力。电磁波还用于分析目标植物对各种重金属的响应。根据通过主成分分析（PCA）和随机搜索方法确定的相关光谱带，然后，采用回归方法来确定用于估计目标危险商（THQ）的最佳谱带。发现在被铅（THQ = 62）和锌（THQ = 5.07）污染的植物中，THQ最高。PCA和随机搜索的结果表明，在谱带的光谱。Pb的b ₅₇₀，b ₆₅₀和b ₇₆₀，Ni的b ₄₀₀和b ₁₀₃₀，Cd的b ₄₀₀和b ₈₈₀以及Zn的b ₅₆₀，b ₉₁₀和b ₁₀₅₀是评估THQ的最佳光谱。因此，在将来的研究中，代替在实验室中通过化学分析来检查植物中重金属的含量，可以基于已建立的相关性在现场轻松地研究植物对确定频段中电磁波的响应。