In this study, the activity concentration of ²³⁵U, ⁴⁰K, ²³⁸U, ²²⁶Ra, and ²³²Th in phosphate rock found in the Kingdom of Saudi Arabia has been measured by gamma-ray spectrometry. Phosphate is extracted from the northern region in Saudi Arabia and widely used in agriculture as fertilizers as well as in the chemical industry. The average activity concentration of ²³⁵U, ²³⁸U, ²²⁶Ra, ²³²Th, and ⁴⁰K has been measured as (10.34 ± 1.49 Bq kg⁻¹, 260.99 ± 19.68 Bq kg⁻¹, 242.33 ± 2.74 Bq kg⁻¹, 3.42 ± 0.94 Bq kg⁻¹, and 47.50 ± 3.03 Bq kg⁻¹) for Al-Jalamid phosphate rock ores, respectively; (46.10 ± 2.61 Bq kg⁻¹, 1028.31 ± 36.88 Bq kg⁻¹, 989.98 ± 6.41 Bq kg⁻¹, 13.75 ± 1.68 Bq kg⁻¹, and 51.93 ± 3.82 Bq kg⁻¹) for Turaif phosphate rock ores, respectively; (63.60 ± 3.33 Bq kg⁻¹, 1353.25 ± 41.58 Bq kg⁻¹, 1304.29 ± 7.70 Bq kg⁻¹, 13.45 ± 1.64 Bq kg⁻¹, and 40.26 ± 3.67 Bq kg⁻¹) for Umm Wu’al phosphate rock ores, respectively; and (13.83 ± 1.59 Bq kg⁻¹, 318.72 ± 21.78 Bq kg⁻¹, 350.50 ± 3.14 Bq kg⁻¹, 5.01 ± 1.13 Bq kg⁻¹, and 42.15 ± 3.02 Bq kg⁻¹) for As-Sanam phosphate mines, respectively. The radiological parameters (gamma index, absorbed dose, outdoor and indoor annual effective dose, and total excess lifetime cancer risk (ELCR)) have also been calculated to assess the health hazards. The radiation indices, effective dose, and ELCR have been found high in all samples corresponding to International Commission on Radiological Protection (ICRP) safety limits, which reflects a radiological health risk for workers and population. The X-ray diffraction (XRD) analysis confirms the concentration of dominant elements like fluorapatite (Ca₅(PO₄)₃F), dolomite (CaMg (CO₃)₂), and minor traces of quartz (SiO₂) and calcite (CaCO₃). The elemental concentration of CaO, Al₂O₃, P₂O_5, SiO₂, MgO Al₂O₃, and Fe₂O₃ has been measured by X-ray fluorescence (XRF) technique.

在这项研究中，通过伽马射线光谱法测量了在沙特阿拉伯王国发现的磷酸盐岩中的²³⁵ U，⁴⁰ K，²³⁸ U，²²⁶ Ra和²³² Th的活动浓度。磷酸盐是从沙特阿拉伯的北部地区提取的，广泛用于农业中用作肥料以及化学工业。的平均活性浓度²³⁵ U，²³⁸ U，²²⁶镭，²³² Th和⁴⁰ K具有被测量为（10.34±1.49公斤贝^-1，260.99±19.68贝千克^-1，242.33±2.74公斤贝^-1，3.42 ±0.94 Bq公斤Al-Jalamid磷酸盐岩矿石分别为^-1和47.50±3.03 Bq kg ^-1；（46.10±2.61公斤贝^-1，1028.31±36.88贝千克^-1，989.98±6.41公斤贝^-1，13.75±1.68公斤贝^-1，和51.93±3.82公斤贝^-1），用于图莱福磷矿石，分别; （63.60±3.33公斤贝^-1，1353.25±41.58贝千克^-1，1304.29±7.70公斤贝^-1，13.45±1.64公斤贝^-1，和40.26±3.67公斤贝^-1），用于嗯Wu'al磷矿石， 分别; 和（±13.83 1.59贝千克^-1，318.72±21.78贝千克^-1，350.50±3.14公斤贝^-1，5.01±1.13公斤贝^-1，和42.15±3.02公斤贝^-1）对As-萨南磷酸盐矿，分别。还已经计算了放射学参数（伽玛指数，吸收剂量，室外和室内年度有效剂量以及终生总癌症风险（ELCR））以评估对健康的危害。在与国际放射防护委员会（ICRP）安全限值相对应的所有样品中，均发现辐射指数，有效剂量和ELCR较高，这反映了工人和人群的放射健康风险。X射线衍射（XRD）分析证实了氟磷灰石（Ca ₅（PO ₄）₃ F），白云石（CaMg（CO ₃））等主要元素的浓度₂），以及微量的石英（SiO ₂）和方解石（CaCO ₃）。已经通过X射线荧光（XRF）技术测量了CaO，Al ₂ O ₃，P ₂ O _5， SiO ₂，MgO Al ₂ O ₃和Fe ₂ O ₃的元素浓度。