UNCONVENTIONAL POLYAROMATICS COMPOUNDS AND MERCURY IN THE TODOS OS SANTOS BAY, BRAZIL: RECENT ADVANCES AND CONTRIBUTIONS TO BETTER UNDERSTAND OF THEIR ROLE IN THE MARINE ENVIRONMENT. Baía de Todos os Santos (BTS) is the second-largest Brazilian bay; it was the first oil producing region in Brazil, with three large industrial parks in its north-northeast portion. In addition, the BTS has two large ports and a population of around 3 million inhabitants distributed among 14 cities. In the present study, recent studies on contamination by polycyclic aromatic compounds (PACs) and Hg in sediments, water, and biota from the BTS region are presented and critically discussed. Among the PACs, studies evaluating the presence of polycyclic aromatic hydrocarbons (PAHs) and their nitrated (nitro-PAHs), oxygenated derivatives (oxy-PAHs), and those containing atoms of S as a heteroatom (PASHs) are considered, as well as the element Hg distributed in seawater, sediments, and biota. Regarding biomonitoring organisms, recent results on polychaetes, ascidians, and corals are presented. Trends for future studies are presented at the end of the text.

ORGANIC AND INORGANIC BIOMARKERS OF ATMOSPHERIC AEROSOLS FROM MARINE REGIONS. In this study, we overview the recent advancements in knowledge regarding organic and inorganic biomarkers of atmospheric aerosols from coastal zones and open marine areas. It deals with the interaction between the ocean and the atmosphere through their interface, the formation of a seawater microlayer (SML) and the exchange of a myriad of chemical compounds between those environmental compartments. We also discuss how marine aerosols (MAs) are intrinsically related to the global carbon cycle, influence the radiative budget of the Earth, and are related to global climate. At the end, we discuss the trends of new studies on the topic. REGIONS study areas interface SML (SML compartments MAs (MAs cycle Earth climate end topic

Resumen Introducción: a raíz de la emergencia por la COVID-19, las medidas de distanciamiento social adoptadas para mitigar la tasa de infección pueden influenciar los hábitos alimentarios y otros factores de estilo de vida. El objetivo de este estudio fue evaluar la relación del distanciamiento social y los factores de estilo de vida en adultos del sureste brasilero durante la primera ola pandémica. Metodología: se trata de un estudio transversal con 1828 adultos de entre 18 y 83 años, de ambos sexos, realizado a través de un cuestionario en línea; se recolectaron y analizaron datos sociodemográficos, alimentarios, sanitarios y de estilo de vida, en función de si se guardó o no el distanciamiento social. Resultados: los resultados mostraron disminución del desayuno (12,5 %) y aumento del consumo de meriendas (24,5 % matutina y 12,5 % vespertina) y picoteos entre comidas (20,4 %), así como de la ingesta de verduras y leguminosas entre quienes estaban en distanciamiento social y de pescado y comida rápida entre los que no lo estaban; la mayoría de participantes reportó ganancia de peso a lo largo de este periodo. Las personas en confinamiento dormían más y su principal causa de ansiedad fueron las estadísticas de la enfermedad. Conclusiones: los hallazgos sugieren la necesidad de implementar estrategias de promoción de la salud acordes a circunstancias como la actual.

Abstract Introduction: In the context of the COVID-19 pandemic, measures of social distancing to reduce the rate of infection can influence eating habits and other lifestyle factors. This study aimed to assess the relationship between social distancing and lifestyle factors in adults in southeastern Brazil during the first wave of the COVID-19 pandemic. Methods:: It was a cross-sectional study with 1,828 adults between 18 and 83 years of age, of both sexes, carried out through an online questionnaire; sociodemographic, food, health, and lifestyle data were collected and analyzed based on whether or not the social distancing was carried out. Results: The results showed a decrease in breakfast consumption (12.5%) and an increase in the consumption of snacks (24.5% morning snack; 12.5% afternoon snack) and snacks between meals (20.4%) during the pandemic, as well as an increase in the consumption of vegetables and legumes among people who did social distancing and in the consumption of fish and fast food among those who did not do social distancing; most participants reported weight gain during social distancing. People who were in social distancing slept more compared to those who were not in social distancing. The main cause of anxiety among those who kept social distancing were COVID-19 statistics. Conclusion: The findings suggest the need for health promotion strategies adapted to the condition of confinement in circumstances such as the current pandemic.

Regulatory pressure is increasingly focusing on the use and disposal of substances hazardous to human health and environment. In the last years efforts have also been made to introduce green chemistry concepts in undergraduate courses. In this paper we present an experiment on the oxidation reaction of borneol to camphor with bleach in acetone. This experiment is important to show undergraduate students that a cheap and non hazardous commercial product can be a useful oxidation agent of alcohols.