Dusty storms considerably increase airborne particles in dry and semi-dry locations, such as deserts with no plants and strong winds. Therefore, the environment and people are affected severely. Ahvaz, an important metropolis, is often polluted by neighboring nations. The present research studies the concentration, source, and calculation of these particles' effects. For health consequences evaluation, the WHO suggests the Air Quality Health Impact Evaluation Programmed (Air Q 2.2.3). Khuzestan Meteorology Office recorded particulate matter measurements on both hazy and clear days. The data was gathered voluminously in 2023. According to data collected from Khuzestan province's meteorology documents, 49 days in 2023 had very unsafe air quality. The most polluted months in terms of the number of dust days are as follows: January (14 days) > December (12 days) > November (11 days) > August (5 days) > May (3 days) > September (2 days) > March, February, June, July, October (1 day) > April (0 days). HYSPLIT maps indicate that Iran causes dust in March, the Great Arabian Desert in December and August, Iraq in April, September, and October, Kuwait in January, Turkey in February and July, Egypt in June and May, and Oman in November. The meteorology database reveals that Ahvaz is highly polluted and that 49 days had unacceptable dust levels. Based on assessments obtained employing the Air Q+ programs, the people of Ahvaz encountered heart disease, respiratory disease, and stroke caused by their exposure to PM_2.5 particulates.

Biosorption is considered as one of the favorable treatment technologies for fluoride removal from aqueous solutions. The present study is the first attempt to evaluate the biosorption capability of the Padina sanctae crucis algae in removal of fluoride from aqueous phase. Biosorption was studied in a series of batch experiments at room temperature (25 ± 1°C). The effects of experimental parameters such as biosorbent dose (0.8–64 g/L), contact time (5–120 min), pH (3, 7, and 11), initial fluoride concentration (2–8 mg/L), and the presence of competing anions (bicarbonate, nitrate, carbonate, sulfate, and chloride) were investigated. The highest removal biosorption was observed at 48 g/L biosorbent dose, 5 min contact time, and initial fluoride concentration at 8 mg/L (97% fluoride removal). Competing anions had no significant effect on the fluoride biosorption by the biosorbent. Freundlich model was better fitted than Langmuir model that showed heterogeneous biosorption surface and the possibility of multilayer biosorption of fluoride by biosorbent. The biosorption kinetics was controlled by the pseudo-second-order and pore diffusion models. It was concluded that the Padina sanctae crucis algae can be used as an effective, low-cost, and environmental friendly biosorbent for fluoride removal from aqueous solutions.

In this data article, we determined the concentration levels of heavy metals including Pb, Co, Cd, Mn, Mg, Fe and Cu as well as selected anions including [Formula: see text] , [Formula: see text], [Formula: see text] and [Formula: see text] in the most used and popular herbal distillates in Iran. It is well known that heavy metals may pose a serious health hazard due to their bioaccumulation throughout the trophic chain ("Heavy metals (Cd, Cu, Ni and Pb) content in two fish species of Persian Gulf in Bushehr Port, Iran" (Dobaradaran et al., 2013) [1]; "Comparative investigation of heavy metal, trace, and macro element contents in commercially valuable fish species harvested off from the Persian Gulf" (Abadi et al., 2015) [2]) as well as some other environmental pollutions, "Assessment of sediment quality based on acid-volatile sulfide and simultaneously extracted metals in heavily industrialized area of Asaluyeh, Persian Gulf: concentrations, spatial distributions, and sediment bioavailability/toxicity" (Arfaeinia et al., 2016) [3]. The concentration levels of heavy metals and anions in herbal distillates samples were determined using flame atomic absorption spectrometry (FAAS, Varian AA240, Australia) and a spectrophotometer (M501 Single Beam Scanning UV/VIS, UK) respectively.

In this article, we used Sargassum hystrix algae as biosorbent for removal of Fe (II) from aqueous solutions that was collected along the Persian Gulf coastline, Bushehr, Iran. The concentration level of remaining Fe (II) in the samples was measured by using flame atomic absorption spectrometry (FAAS, Varian AA240, Australia). The isotherms, kinetics and modeling data of Fe (II) biosorption onto Sargassum hystrix were also presented.